I recently had Georg put a new 5 speed and a new Aisin Clutch kit in. I had a Spector Extreme clutch that I put in years ago before. I noticed immediately that this Aisin clutch was much easier to push in. Now a few months later I’m noticing this very annoying shimmy upon release of the Aisin clutch. If I hold the clutch and gas just right I can make the whole motor shake. I’m thinking of yanking the trans back and trying a Center Force clutch as this Aisin clutch seems to be struggling to push my 285’s. The Mickey T is a pretty heavy tire. Hopefully the heavier unit will fix it