# Curve on the edge of a bearing issue

**URL:** <https://forums.yoyoexpert.com/t/curve-on-the-edge-of-a-bearing-issue/70053>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [October 11, 2014, 12:21pm UTC](https://forums.yoyoexpert.com/t/curve-on-the-edge-of-a-bearing-issue/70053 "2014-10-11T12:21:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![shtagod](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/shtagod/32/7916_2.png) [@shtagod](https://forums.yoyoexpert.com/u/shtagod)\
**Post date:** [October 11, 2014, 12:21pm UTC](https://forums.yoyoexpert.com/t/curve-on-the-edge-of-a-bearing-issue/70053/1 "2014-10-11T12:21:43Z")

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I have this YYF Superstar (old= hubstaked) and the bearing is locked (the one on the right)

 ![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/3/5/6/356ab5508767dc5d59ebf594f748fdcc21219d15.jpeg)  
–sorry about the blurry pic–  
I noticed that every other C sized bearing I have (left one for example) had an curve on the edge - rather than being flat until the edge like the stock one… What happens is the yoyo has a little gap between the bearing and response that seems to add a bit of friction when played (like when thin string goes there).

I’d appreciate a recommendation of a ‘‘fully flat’’ bearing of a little better quality since it is kinda hard to see that from photos in the store. I was thinking maybe getting couple of half specs and doing a beefcake mod… would that work?

On a side note, I would also like to find a centering (kk, ct or whatever) bearing that doesn’t have this curve if you know what I mean…

Thanks for reading