I Recently Converted To A Luk Solid Flywheel Replacement. No Problems There. I Love It . A Little Jerky But Great. Just Changed My Tranny Fluid About 400 Miles Ago With Mobil Synthetic. My Problem Is When Shifting At A Higher Rpm Quickly, It Grinds. Kinda Embarassing. Mostly Into Third And Downshifting Into That Gear Also. What Maybe The Cause? Don't Recall This Happening Before The New Improvements.any Easy Fixes? Other Than Syncrho's Goin Bad? I Thought It Maybe To Slow Of A Left Foot. But Tried I A Couple Different Senerios. Thanks Dominic