As topic says- no joy in the dollar bill test (Kozy Z42). I haven't had any problems but was just curious while the stove was cool. The failure is more towards the center where the doors meet. It takes very little tug to remove the bill- other parts seem to be more snug. I've tried to adjust the door but any more adjustment and I won't be able to latch it fully. I tried keeping the current setting and applying pressure on the doors but the snugness didn't seem to improve. What are my other options- possible new/thicker gasket (current gasket is still in great shape)? When I close the air intake on a roaring fire at times I can almost snuff out the fire but I was curious if this might be contributing to my shorter burn times- just a thought