I think I have found my problem, but want a second opinion before I remove the bolts. I ordered the clutch assembly from ASAP and there are three bolts in the pressure plate. The old pressure plate does not have these. The tractor will not pull it"s self up a hill in high range. I am under the assumption that I should have removed these once I got the tractor together. I will try to attach a pic of the bolts. It is a diesel with a two stage clutch if this matters. Flywheel was surfaced and all parts are new. Tractor went together very smooth. No pulling it together with bolts. Just FYI. Thanks for any advice.