[AussieinNC]

Take the convertor and test fit it inside the end of the crank....it should seat all the way in with little effort...

There could also be an issue with the trans oil pump gears being assembled backwards, keeping the convertor hard up against the crank....

Also check for clogged trans cooler lines and cooler...a plugged cooler line or cooler will make the convertor balloon and push forward against the thrust face...