Replaced a broken unit on my 95 with one from a 93 1/2, just swapped out the whole assy. First it made an unpleasant clicking noise which would not stop at the end of the down cycle, them I pulled the plug, cycled it, and it was fine going down, now it makes the noise at full extension of the up cycle and does not stop. I tried swapping out parts of the assy, the timer (same part #) and assy with the good mast from the '93, still clicks. Nothing helpful I can see in the FSM, searched G20.net, etc. Anybody know how to synchronise this?? All I can think of is maybe they changed the length of the nylon cable in later yr. P-10's. Part numbers on the motor assy are different, but they look identical.