I wrapped mine with 1" wide electrical tape. Not permanent but stops most of it. I know I will have to do it again next year, but it's cheap and takes about 10 minutes of trial and error to get it snug. I make it too tight at first, and peel some off to make it fit snug, so I don't have a bunch of pieces... that doesn't work as well, and they ball up. I do the sleeve and the hitch, and it works better than I thought it would.
J & D in Lovely Weatherford, TX
2016 Jayco White Hawk 28DSBH TT
2014 Ram 2500 Crew Cab 4X4 6.7L Cummins