Another clutch problem

After 25 years of abuse mowing thru the swamp, the clutch had slipped enough that the tractor and PTO would almost stop. So this year I decided to replace the disc before trying to use it again. I bought some parts from my local Kubota dealer, but he wasn't exactly the most helpfull with my grey market machine. He was quick to say "make sure you need it, because we don't and nothing can be returned!". I ordered an aftermarket disc online, but it was too small in diameter, so I returned it. I took the disc that was in the machine to a local shop for repair. They send them out for another company to reburbish. After a call to pick up my new disc, I was surprised. A totally new disc had been shipped along with the center hub from the old one, so I could see how worn out the old hub was. I blew out the pressure plate and that "looked good" to me. After installing the new parts (disc, throw out bearing, and a rear main seal), I adjusted the pressure plate as the service manual states when installing a new disc. I started the tractor for a trial run, but couldn't get it in gear. Grinds like crazy. If I start it in gear, no problem. I can go from one gear to another until I put it in neutral, let the clutch out and then try to put it in gear. I have adjusted the pressure plate from one end to the other 1/8th of a turn at a time. I have put a few clutches in vehicals, but never had a problem like this. I'm begining to think that the disc itself is a few thousands too thick. Right now I'm stumped.

The pedal travels until the starter safety switch is pressed as it should. This is all called out in the manual.

Every time I make an adjustment to the pressure plate thru the window in the bell housing, I adjust the linkage at the pedal. The manual calls out 13/16" to 1 3/16" free play in the pedal. I have adjusted the linkage out to the bare minimum of free play (maybe an 1/8") and the results are the same. I had the flywheel resurfaced, but nothing done to the pressure plate. If I start the tractor in gear, everything is perfect. It does not want to move, I can shift from reverse to any gear with no grinding. I can move the tractor under its own power. All goes south as soon as I shift to neutral and release the clutch and then try to put it back into gear. The manual gives a dimension of 2 1/4" from the mounting surface of the pressure plate to the contact surface for the throw out bearing. I did everything by the book, except resurface the pressure plate. It makes no mention of that. My throw out bearing is new and my machine does not have a pilot bearing. There is no place for it and the input shaft is not long enough to contact the flywheel (must be a grey market thing?). I checked the input shaft for a bad bearing before putting it back together. My tractor is a bit different in the PTO area than an equivalent L225 as mine has a 4 speed PTO, so I believe that is why no pilot bearing. I did order one from Kubota to see what came in. No place for it in the flywheel. Again this is not my first rodeo, only with a foreign machine. I have two Case tractors (930 & D), a Farmall M, and a Allis Chalmers B. I've replaced the clutch in the 930, M & B. Never had this problem before. Those only got a disc, nothing more.