We full timed 10 years, 8 in a 07 Executive we ordered. It had a collection barrel for the power cord. I had a lot of problems with the in feed into the barrel. Manually assisting does help. After a period of time, the cable takes a "set" into it from being stored in the barrel. And as mentioned, i always wiped it off as i reeled it in.
My solution to that was, once a month i would extend the entire cable, on a warm sunny day, take the twist out of it mannually, and let it lay for the day. That routine resolved the issue for me. I would never have another collection devise like that again, for/as a coach power cable storage/retrieval purpose.