Have owned this unit for 16 months and when winterizing noticed a crack approx. 6" long on the side panel 6 1/2 ft up at the rear corner on the driver's side. Seems to begin right at the rear corner under the corner trim and heading towards the front at a sloping 45 deg angle. Going to dealer soon and would like to inquire if anyone has experienced this issue. Totally happy with trailer and of course it will have to be fixed. Wondering, does the fix solve the problem, or does it reoccur ?