SOmetimes when I push the pedal it feels like it is rough and grabbing. Mostly still ok at this point. Last night it seemed to get "stuck" after I pushed it in and then didn't work at all for about 10 seconds like I was not pushing on anything. Hyd clutch. Could this be the hyd system or maybe the pressure plate? I know this is a dumb question as it is either/or. But, I have no experience with hyd. I would think if it is the pressure plate it would do it all the time. The hyd stuff is used and I have no history on it. Everything else has 3000 miles on it. 11" BB? clutch and PP. sm465 bellhousing mated to nv4500. sm465 throwout bearing. Bearing reteiner on nv was machined down to fit the throwout. Mated to a 4BT Cummins. Anyway it is coming out of the truck today.