Sometimes my YYF plastics pick up an added vibe just from unscrewing or from hitting my hand really hard etc. Fortunately, I’ve found you can often undo that using some of the simplest tuning techniques like re-screwing it back together or tightening and loosening the halves together until it starts to play more smooth. It’s an art, not a science. And if you have a yoyo with vibe that was caused by damage to the yoyo it may require more advanced tuning techniques or not smooth out like you want it to no matter what you do.