Hmmm........ fire's dying low fairly quickly lately. Hmmmm....... something's different. Investigating, I did the dollar bill test on the front door. Mind you, I don't use the front door much unless I'm loading small splits n/s or if I am cleaning the glass. Hmmmmmm...... gasket seems loose near the latch. More "Hmmmmmmmmmm's" and I found the culprit: The shiny spacer that the door latch catches on is loose and is slightly tipped to the side. Re-seated the shiny spacer and tightened it up. Good to go.