Hi everyone, Made my first major blunder with the stove last night. Loaded full with oak and fell asleep with the stove wide open. Woke up 5 hours later to a bed of coals. I usually set my phone alarm so this doesn't happen, but not this time. So....I checked the stove. No apparent issues - no cracks, warping, nothing that is obvious. But, here is the problem. I reloaded the stove, wood caught, no problems until I started to back down the air. Seemed to have a tough time getting the secondaries to light and for the fire to not snuff. Finally got them to stay lit after about an hour of working with the stove. Same problem at start up this morning. I just did another thorough inspection. The only difference I can see is at the collar. There is a larger gap between the collar and stove pipe in the back than there was before (although the collar seems perfect - no crack/warping that I can see. But, if I hold a flame to the crack, air is being sucked in. Would this possible cause such an issue with the secondary combustion? I'm going to by some high temp caulk and fill the gap to see if it helps. Any advice is certainly welcome! Cheers!