Hello Well, the Avalon Astoria was great the 1st 3 years but the 4th season has been tough! alot of caked ash in the burn pot. So a Selkirk Masonry DT kit and a new exhaust blower completely cured it! Still there is inconsistant flame height and low heat output! A brand new Gleason-Avery 1 RPM auger motor only helped a little. A new control panel did nothing! The auger was turning by hand. It did not stick or hang but seemed sluggish and not as freely as it should be! So I finally pulled it apart again and I found this #@@##$! Crud ! ! ! See yellow arrows in pics below. I cleaned with a cue tip and Acetone from Home Depot then added Tuff-Oil Lube-It-8 to the inside of the brass bearing. Last 2 days we did not need heat but tonight and tomorrow we will, so I will try it and see. Any comments? Has anyone seen this here crud?