I was cleaning up my hearth area last night - vacuuming, wiping down, etc. - one last time since I have retired the stove until next winter. When I removed the door glass to give it a good cleaning, the gasket behind it just.... fell off. No signs of glue or gasket cement ever being applied during the assembly process (the stove was bought brand new summer '15). Is this normal and the pressure of the glass is just supposed to keep it seated in place? I put it back like it was before I took it apart after I cleaned the glass and probably wont mess with it again until September, but I just thought I would ask you all for advice.