I have more holes in this bus than Tony Montana. ( screw holes ) The previous owner liked using screws to hang things etc. Theres a hole from the old heater, screw holes, and I recently removed the propane heater. The insulation almost looks like asbestos,...ewwww. So I was wondering if its worth to drill out the panel rivets,...rip the fun stuff out, re insulate or not. Theres an old school mechanic on the property I live at who says don,t do it, I don,t need to etc. I live in the great white north so duct taping these holes off are not an option. I,d like to pull the panels,...insulate it my way and re install the panels,...fill the holes and paint away. Any advice bolters ? Thanx Guys ! Cheerz !