I recently acquired my past grandfathers Jubilee upon transporting it from the wrecker station to my house, which is about a mile mile and a half I had and fourth gear, moving at a good steady pace all of a sudden the rear end locked up and stalled upon rocking tires back-and-forth rocking the clutch for a second it disengaged and I continued on in first gear went a while seemed OK moved up into fourth gear again, on level ground, it did it again repeated what I did on the first time ended up driving the rest of the way in first gear home now there is a slight noise not sure what s going on. I m new to the tractor world. I looked in the gear site port I can see some oil in the bottom, but not a lot look in the transmission side same as well, can you guys help? Am I too low on fluid? I ordered a manual yesterday from www.Farmtractorsrepairs. thank you.