Firebox ceiling tiles replaced (thanks Nick), and door-gasket repaired (Nick again, w/ touch-up by Ted) ... firebox working much better.
Still need to replace thermal switch (non-functional), replace blower unit (burned, noisy, out of balance), & make sure air-intake isn't clogged. Should also call a chimney sweep someday (every 10 yrs is a good idea, it's approaching 20).
Representative Fireplace manual
For 20 years, the critters have made the barn a cozy home ... full of mouse-poop and torn-up family-stuff. It's well-past time to fix this, so here's the work-list:
2- vs 4-post lift? Manufacturer? Placement w/in Garage?
Planning to make the following updates: