We have a 10 year old Hearthstone Phoenix. The door is slumping on its hinges such that it isn't closing right/sealing any more. The hinge pins seem no longer aligned perfectly. The door is quite heavy, so I suppose it has been pulling them askew slowly over time? Hubby has tried putting a washer on each hinge pin that holds the door up to raise it up a bit. That helps some, then the top seals but the side by the handle doesn't seal up right still. We could stuff some gasket material in a place where there isn't supposed to be any. Any thoughts or suggestions on how to fix this? It's not like we can take it somewhere to be fixed, and the original installers were good but are out of business now. Any advice appreciated.