Mile Marker ES12000 help?

I have an older SE12000 Mile Marker winch that won't power in reverse. It will sometimes spin just a fraction of a turn almost as if it binds and wont spin. Usually this gives me enough slack to release the clutch and free spin, but not always and with the clutch release being plastic I'm amazed I haven't broken it over the years.

I've bought a new remote, had a starter rebuilder buddy check the electric motor and he saw nothing wrong, and used this video ( ) to completely issolate the electric motor from the solenoids and jump it from a 12V battery and it does the same exact thing. It will pull in perfectly fine with remote and when bypassing the solenoids, I just used it yesterday to pull a utility trailer and a F550 up a muddy hill (seperately) but once we got the 550 to the top of the hill we had to hook another truck to it and get tension off my winch so I could release the clutch and reposition.

Anyone ever come across this