Clutch problems

I am having a serious problem with my clutch and A833 4speed
I have installed a new clutch kit and new flywheel and it disengages fine, I can shift it and start it in gear, but the car will hardly move, it’s like the clutch is slipping bad, I have an American power train hydraulic clutch kit and there is a 3/16 gap between the face of the bearing and the clutch fingers so it’s releasing all the way, just clutch won’t grab. I had a ram clutch and now a McLeod clutch , neither of which were cheap, and have the same result. I had the flywheel turned between clutches and have the same result. Has anyone heard of any other factors that could cause this. The rear is rebuilt and shortened but will turn freely when car is off the ground and car can be pushed
Thanks in advance