# YYF Genesis B-Grade mod?

**URL:** <https://forums.yoyoexpert.com/t/yyf-genesis-b-grade-mod/80594>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [May 29, 2016, 3:39am UTC](https://forums.yoyoexpert.com/t/yyf-genesis-b-grade-mod/80594 "2016-05-29T03:39:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![AngryGumball](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/angrygumball/32/683872_2.png) [@AngryGumball](https://forums.yoyoexpert.com/u/AngryGumball)\
**Post date:** [May 29, 2016, 3:39am UTC](https://forums.yoyoexpert.com/t/yyf-genesis-b-grade-mod/80594/1 "2016-05-29T03:39:50Z")

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I picked up a B-grade YYF Bimetal Genesis earlier today and (shoots myself in the foot) after making the purchase I play it, found it had some nasty vibe. What I get for not testing before handing over the $20 for it.

That aside and moving forward, are there any kind of modifications that can be done? Basically the problem appears to lie in the off-centered SS rings, where it’s thinner on one section than the rest. I wouldn’t be able to do any mods myself (lack of skills and equipment). Would it be even worth anyone’s time to mod or should I just count the loss and move on? Not sure how costly it would be to do such a thing, so kind of testing the waters to see what kind of feedback I get.

My goal would be to get this to be a bit more smooth, currently vibe feels like it hampers the play.

 ![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/7/0/4/704ce9cd63474a64b5250e2c21e2482d04e53c32.jpeg)

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**Author:** ![Bcmaddog](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/bcmaddog/32/1170_2.png) [@Bcmaddog](https://forums.yoyoexpert.com/u/Bcmaddog)\
**Post date:** [June 3, 2016, 5:16pm UTC](https://forums.yoyoexpert.com/t/yyf-genesis-b-grade-mod/80594/2 "2016-06-03T17:16:36Z")

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Have you attempted to tune the yoyo at all? I was never able to tune a yoyo, but some people can do it super well and turn B grades into smooth yoyo’s. If a person with all the proper equipment were to try and cut down the rings so they were both the same size, I think it would cost a great deal, and generally not be worth the time and effort.

Tune:

> **[How to tune a yo-yo with a set screw axle](https://forums.yoyoexpert.com/forums/index.php/topic,9488.msg102569.html)**
>
> Most metal yo-yos use a set screw axle. So how do you tune a yo-yo with a set screw axle? In this guide I’ll try to explain how to tune a yo-yo with a set screw axle. As a side note I’m going to go into mind numbing detail about all things. I just...

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**Author:** ![AngryGumball](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/angrygumball/32/683872_2.png) [@AngryGumball](https://forums.yoyoexpert.com/u/AngryGumball)\
**Post date:** [June 5, 2016, 5:27am UTC](https://forums.yoyoexpert.com/t/yyf-genesis-b-grade-mod/80594/3 "2016-06-05T05:27:54Z")

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I’ve tuned several of my yoyos. I’ve pretty much come to the conclusion that this yoyo’s a lost cause. Definitely not happy with the purchase (kind of surprised this even made the cut for a b-grade, I honestly wouldn’t have tried to sell something like this), and pretty much “all sales are final” so I essentially spent $20 on a YYF flat bearing (I’ll most likely not really use).