More then likely you have the wrong pedal assembly for your pressure plate. Change the pin spread from 5 1/4 to 6 inch. You will get more release of the pressure plate. This was changed due to the the complaint of pedal being harder to push with the 6 inch spread. This can be done by welding 3/4 inch extension on yours. It will shift easier. Especially into reverse and first
Not to throw a wrench into this scenario, but I have run across 3 different pin spreads on the A-body pedals. My Demon has the 5.25" spread, and I have no problem power shifting at 6,000 RPM with a mild SB. Even has the larger 10.9" clutch disc.