# Difficulty keeping the Mighty Flea running right!
**URL:** https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495
**Category:** Yo-Yo Mods and Maintenance
**Created:** [May 24, 2014, 2:39pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495 "2014-05-24T14:39:36Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)
#### Post date: [May 24, 2014, 2:39pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/1 "2014-05-24T14:39:36Z")
Hi everyone,
I have a Mighty Flea and enjoy it, but man, is it hard to keep it running properly!
I know how to clean and lube a bearing, but I find it to be almost impossible to keep it running unresponsive consistently. My freshly cleaned bearing becomes responsive after around 2-5 minutes of play! I use acetone or methylated spirits and terrapin dry for lube.
Do any of you guys have the same difficulty? Any suggestions?
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### Author:  [@Jake\_Elliott](https://forums.yoyoexpert.com/u/Jake_Elliott)
#### Post date: [May 24, 2014, 2:41pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/2 "2014-05-24T14:41:22Z")
Make sure the bearing seat area of the yoyo itself is well cleaned. There might be some dust in there that’s clogging up the bearing.
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### Author:  [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)
#### Post date: [May 24, 2014, 2:42pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/3 "2014-05-24T14:42:52Z")
For sure. Looks pretty clean though.
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### Author:  [@abby1371](https://forums.yoyoexpert.com/u/abby1371)
#### Post date: [May 24, 2014, 2:43pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/4 "2014-05-24T14:43:22Z")
If it’s a bad bearing you can buy a little micrometer and measure the bearing so if it happens to be a bad bearing. you can buy a bearing from and industrial company since you know the size you need to buy a new one. (plus it’s cheaper than buying straight from YYF)
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### Author:  [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)
#### Post date: [May 24, 2014, 2:46pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/5 "2014-05-24T14:46:03Z")
Thanks. I’ve actually already done that. Unfortunately, I have had the same experience with 8 bearings.
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### Author:  [@Coffelt](https://forums.yoyoexpert.com/u/Coffelt)
#### Post date: [May 24, 2014, 5:10pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/6 "2014-05-24T17:10:08Z")
Dumb question, are you using flea string?
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### Author:  [@Yoyo\_Kangaroo](https://forums.yoyoexpert.com/u/Yoyo_Kangaroo)
#### Post date: [May 24, 2014, 11:26pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/7 "2014-05-24T23:26:15Z")
Cheap, light flea string plus that high wall is a bad thing for response. Try using a stiffer string.
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### Author:  [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)
#### Post date: [May 24, 2014, 11:41pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/8 "2014-05-24T23:41:22Z")
Yes, I am using flea string. What type is flea string? Is it type 4? I could try to find It in nylon which would be stiffer, but I don’t like my chances.
I’ve noticed that yyf string starts getting fluffy pretty quickly which may contribute to the yoyo becoming responsive. Don’t know.
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### Author:  [@Yoyo\_Kangaroo](https://forums.yoyoexpert.com/u/Yoyo_Kangaroo)
#### Post date: [May 26, 2014, 3:40pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/9 "2014-05-26T15:40:53Z")
Yeah, flea string is 3 or 4. Just email a string maker and ask them to make you a stiff flea string. They should be able to do it.
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### Author:  [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)
#### Post date: [May 26, 2014, 8:53pm UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/10 "2014-05-26T20:53:25Z")
Custom made string, eh? Sounds expensive!
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### Author:  [@modman10](https://forums.yoyoexpert.com/u/modman10)
#### Post date: [May 27, 2014, 2:44am UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/11 "2014-05-27T02:44:35Z")
> [@anon5341354](#):
>
> Custom made string, eh? Sounds expensive!
Not too terrible, i make flea string and i could make and send you ten for 3.50.
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### Author:  [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)
#### Post date: [May 27, 2014, 10:52am UTC](https://forums.yoyoexpert.com/t/difficulty-keeping-the-mighty-flea-running-right/66495/12 "2014-05-27T10:52:44Z")
Yeah, but I live in Australia. Postage would be killer.