Hey folks, I’d appreciate any insight or advice. I’ve attached a couple pictures that shows what was blocking my damper from closing, it appears to be buildup of some kind around the actual liner for the air intake of the damper? Does creosote normally do this in that area for PH users? If it’s not normal any suggestions for prevention and safe maintenance? I’ll be calling Woodstock tomorrow
but wanted to see if others had similar experience or suggestions first. TIA!