Just this season my midmount to front wheel long/large MID PTO shaft has started falling off the connector under the front wheel at the mid-mount to front PTO connector. Now I notice that the PTO shaft snap ring and locking collar will not lock on the shaft, even though it's cleaned and well lubricated. I vaguely recall having to pay close attention to setting up the connector when I installed the set up 3-4 years ago so I am guessing that after 3 years of fairly heavy use I would be wise to take the assembly off and check it thoroughly. My only guess is that the connector housing has stretched under load and the locking ring ball bearings cannot reach the locking slot due to the expansion...harder to explain than show. I will have to report back on the status of the connector shaft.