I tried to put a steering knob on my 1985 JD 318 that I recently purchased. I love this tractor! I don't understand why I can't place a steering knob on it though. I installed the knob at the 2:00 O' Clock position with the wheels going in a straight line. Took it for a little drive and the steering knob ended up poking me in the gut (6:00 O' Clock) while I was going in a straight line. Put the knob back at 2:00 O' Clock and it ended up at some other random point after a little drive. Then I noticed that the deer on the center of the steering wheel never ended up in the same place twice while going straight.
What the hey!