Hey guys, I picked a Case 1537 Uniloader with Wisconsin Vg4d motor in it. The machine runs drives and moves, but the motor is smoking pretty bad. I checked the compression on the motor and its around 50-60 PSI on all 4 cylinders. Any thoughts why the compression is equally the same on all 4 cylinders? Also would this cause the machine to move and turn slow? I want to insure the machine is worthy before i buy or rebuild the motor. Thanks