FWIW. Many years ago when I first installed my CFDF assembly, I cheeped out and used a NEW, OE type T.O. bearing. I had the same problem you are experiencing. I bought a new Centerforce Throwout bearing. Before installing, I put them, face to face. The CF bearing was smalled in diameter. I'm not sure if this is your cure or not, but I haven't had any issues with the CF bearing, going on 8 years now. Good luck. I recommend also to drop the trans and see exactly what is going on.