Boy things have really changed. Needing some advice about tuning up some older yo-yos. I’ve got a Dif-E-Yo sportster, wide sportster, YoYoJam Hitman, Speeder, Lyn-fury, Oxy 4, Freehands’ and some Buzz-on that wooble and a few more I can’t remember. I bought a Shutter and boy have things gotten better. Any advice is advice is appreciated.