I get a bit of flacking on the front and rear caps over winter which I correct with a spring wash and wax. I use Bar Keepers Friend and a green scrubber to remove the loose coating and feather the edges. Follow with a good wash with mild soap and water to remove any dirt, bugs and such. Two or three coats of RMP and the caps look good as new.
I have not had problems with the side walls or graphics just the caps after the winter cold temps. I think the flaking might be due to possible swell and shrink of the fiberglass caps. My black decals have already shrunk 1/8 inch or so but look ok at 30 feet going 30 MPH (my 30/30 rule). Coach is out in the South Eastern Virginia weather 24/7/365.
Also found the a strong solution of LA Awesome (3 to 1 ratio water to cleaner) mixed in a pump garden sprayer will strip RMP pretty effectively. Spray in on wait a few minutes then a light scrup with a green pad and the coach is back to dull tied look. Works best not in direct sun so the solution doesn't dry out.
