I have a Demco 5th Wheel auto-slide hitch. I inspect the hitch twice a year and in doing so remove cover plates to look for worn equipment such as the carrier bearing, which failed one time before. In addition, I had it professionally serviced after 5-years of service.
The professional service was well worth the money and time. The hitch is like new and pulls really well.
I do not use a Teflon plate on mine since it is an auto-slide and the entire head of the hitch rotates when I turn.
Cheers
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