There were a few spots showing that were coming away from sides, back, as I said, everywhere something was cut out, lights, etc. caulking was very poorly done on one side of camper, from factory, other side well done, although my husband recaulked entire trailer. This trailer was built in 2010, the year of Elkhart Ind rv sales diminished with the economy. We are wondering if this trailer was actually started before that date and sat somewhere. All my cabinets are even pre drilled for shock absorbers to hold doors up, but none installed. You have to hold the doors up with your head to put something in cupboard. We were told that was not an Elkridge option ...so we ordered them...then received with no screws and one is a speciality screw. Heartland said they don't supply or sell screws...But back to the sidewalls, my husband is aware of the separation can be due to moisture...and to answer your question as to wondering why...our opinion is poor workmanship in production of this specific rv. There are lemons in all products and unfortunately after 40 years of working, have retired and got caught up in this one. Thanks for your time.