# Three questions **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [April 11, 2010, 7:35pm UTC](https://forums.yoyoexpert.com/t/three-questions/13252 "2010-04-11T19:35:45Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![arion676](https://avatars.discourse-cdn.com/v4/letter/a/b77776/32.png) [@arion676](https://forums.yoyoexpert.com/u/arion676)\ **Post date:** [April 11, 2010, 7:35pm UTC](https://forums.yoyoexpert.com/t/three-questions/13252/1 "2010-04-11T19:35:45Z")
1. Is it safe to use hot glue instead of flowable sili in the O-ring groove of my YYJ Dark Magic? aaaaand 1. Any good thread combinations I should try for my handmade yoyo string, and maybe how you make yoyo string (presuming you do of course)? Almost there, 1. Would a Ceramic KK bearing be better than a Center-trac bearing? ---
**Author:** ![patrickcondon](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/patrickcondon/32/619950_2.png) [@patrickcondon](https://forums.yoyoexpert.com/u/patrickcondon)\ **Post date:** [April 11, 2010, 10:23pm UTC](https://forums.yoyoexpert.com/t/three-questions/13252/2 "2010-04-11T22:23:10Z")
Iv’e used hot glue with okay results, not the best though… poly should be fine. or poly/nylon. or poly/cotton center trak / konkave bearings dont make yoyos play better, ceramic or not. ---
**Author:** ![arion676](https://avatars.discourse-cdn.com/v4/letter/a/b77776/32.png) [@arion676](https://forums.yoyoexpert.com/u/arion676)\ **Post date:** [April 11, 2010, 10:24pm UTC](https://forums.yoyoexpert.com/t/three-questions/13252/3 "2010-04-11T22:24:46Z")
would hot glue make it less responsive than the stock rubber o-ring though? ---
**Author:** ![neil.parsa](https://avatars.discourse-cdn.com/v4/letter/n/9fc29f/32.png) [@neil.parsa](https://forums.yoyoexpert.com/u/neil.parsa)\ **Post date:** [April 14, 2010, 6:57pm UTC](https://forums.yoyoexpert.com/t/three-questions/13252/4 "2010-04-14T18:57:42Z")
No hot glue would work almost equally it just depends on quality but id go with silicone, the dark magics a great yoyo and i woulden’t take too many chances with it unless it’s not your main yoyo ---
**Author:** ![arion676](https://avatars.discourse-cdn.com/v4/letter/a/b77776/32.png) [@arion676](https://forums.yoyoexpert.com/u/arion676)\ **Post date:** [April 15, 2010, 7:47pm UTC](https://forums.yoyoexpert.com/t/three-questions/13252/5 "2010-04-15T19:47:59Z")
I’ll probably just wait till next week to get some flowable silicone, not that it will matter after next week, I’m getting a YYF Genesis ;D ---
**Author:** ![neil.parsa](https://avatars.discourse-cdn.com/v4/letter/n/9fc29f/32.png) [@neil.parsa](https://forums.yoyoexpert.com/u/neil.parsa)\ **Post date:** [April 16, 2010, 2:13am UTC](https://forums.yoyoexpert.com/t/three-questions/13252/6 "2010-04-16T02:13:16Z")
k then i guess you could mess with it but still id do what you r doing now _(p.s the Genesis is awsome)_ I dont know too much about string but i feel that ceramic kk berings just cost more then a reg. (though there might be some cause for its price) but center track is a cheaper option. ---
**Author:** ![cameron](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/cameron/32/307_2.png) [@cameron](https://forums.yoyoexpert.com/u/cameron)\ **Post date:** [April 17, 2010, 7:14pm UTC](https://forums.yoyoexpert.com/t/three-questions/13252/7 "2010-04-17T19:14:16Z")
Center track and KK keep the string from hitting the response while the yoyo is sleeping. If you have a good throw then your fine and it already does that, if not then you can use it like training wheels until you have a better throw. IMO KK is a waste of money and I wouldn’t need a center track so it’s up to you. ---
**Author:** ![jetboy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jetboy/32/489_2.png) [@jetboy](https://forums.yoyoexpert.com/u/jetboy)\ **Post date:** [April 19, 2010, 1:25am UTC](https://forums.yoyoexpert.com/t/three-questions/13252/8 "2010-04-19T01:25:53Z")
Yah, i wouldn’t risk damaging your DM with hot glue, stick with the o-ring (it works great with me!), Hands down, KonKave bearing. I think this b/c the center track has a large flat area of space in the center, this could mean that the string will still hit the sides. The Konkave has a curve in it the whole way, this ensures that the string WILL NOT hit the sides. (I’ve tried both the CT and the KK, so i know each of their performances) Good Luck! 🙂 ---
**Author:** ![cameron](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/cameron/32/307_2.png) [@cameron](https://forums.yoyoexpert.com/u/cameron)\ **Post date:** [April 19, 2010, 1:47am UTC](https://forums.yoyoexpert.com/t/three-questions/13252/9 "2010-04-19T01:47:26Z")
> [@jetboy](#): > > Yah, i wouldn’t risk damaging your DM with hot glue, stick with the o-ring (it works great with me!), Hands down, KonKave bearing. I think this b/c the center track has a large flat area of space in the center, this could mean that the string will still hit the sides. The Konkave has a curve in it the whole way, this ensures that the string WILL NOT hit the sides. (I’ve tried both the CT and the KK, so i know each of their performances) Good Luck! 🙂 There really the same, because the flat part doesn’t matter at all. Straight flat regular bearings are just as good (better IMO) as KK and Center Trac. With a good throw your string will stay ing the center and away from the sides.