What is the theory behind why this would fix the high rpm 1st to 2nd grind? I've heard others say the grind may be caused by inadequate synchros in the tranny. Others have also said that GM acknowledged this for LS3 guys and started using carbon fiber synchros to eliminate the grind. The synchro theory makes sense, but I don't understand how a new master cylinder that flows better and faster would help with grind. I am not an expert by any means, so please school me.