I have the same issue with my Diplomat. Sometimes hard to shift into first from neutral.
I've blocked the pedal to the floor, it had plenty of air gap and the disc spun very freely when i crawled underneath. I really thought i was having a clutch dragging or even pilot bearing issue, but it doesnt seem to be the case.
I've got bell housing runout down to .003 or .004. Trans only has a few thousand miles on rebuild, Centerforce DF clutc, Sta-lube GL4 75w90, shifter is only a few years old.
The weird thing is that it usually only does it when the car is pointed down hill. Is it possible that the disc is just laying against the fly wheel and grabbing enough to spin the input shaft a little sometimes?
Have you tried 2nd or 3rd under those conditions ?? I really doubt the disc would be dragging when pointed downhill.
