Stall convertors for the 904

I'm running a PTC
i believe cost was about 500 shipped to MI and it does great
if i drive the car like a normal person it will creep away at idle
but when i get on it it will flash to 3200 and break the rear end loose


so about that creeping at idle...i kinda zoned out at a light today and left a little pressure of the brake pedal...i almost rolled into (or better said, through and over) the import in front of me