I believe im having problems with my master cylinder, i cant bring the RPMs past 1500 rpm without the whole car moving forward, it feels like the rear brakes just arent up to par. I have a stock convertor and asked a guy at the track where he launches at and he says he can bring his rpms up to 2000 sometimes even 2100 before he starts to smoke his tires. If that is true i think that extra 600 rpm at launch would really help my ET's and my 60fts. Also when i sit in a rock driveway with my foot on the brake my rear tires just spin and dig themselves into a rut. So should i be able to launch at around 2000 rpm with a stock convertor???