I have an older 23' toy box w/ metal siding, the left front of the hauler had an air leak bubbled out, then came loose from the corner moulding and is now showing insulation, I was wondering if anyone hear new someone who does these type of repairs...Besides the local rv crooks who want $110.00 per hour and 10.0 labor to r & r siding and staple it back on...I am wiling to pay cash for the repair! can anyone help?