clutch release bearings

Hi All,

I have a 1994 z32 tt manual

I've just changed the clutch for a stage 3 item purchased on line from the states

My question is are there different release bearing carriers?

The original bearing was pressed home as far as it goes if do that with new bearing it doesn't contact pressure plate to release

I've pressed it to the front edge and it now works but doesn't look right in my eyes

There is no difference in the height of pressure plate or depth of bearing

Any help