It's not in creeper mode. I don't think it is clutch related, as it goes into gears forward and reverse no problems. I would describe it like it slips. It may lurch foward a couple of feet, and then stop. It has a difficult time moving on an incline. This started about two weeks ago, so I looked at the fluid an it appeared dirty, so I changed it. I drained off only about 1 gallon of trans oil through the bottom plug. Is there a hidden screen or filter that I am missing?. The clutch depresses fine, and returns all the way back to the normal position. The PTO works fine, so I would assume that the issue is not with the return on the clutch, but maybe I am missing on this one?