I have had my Harman Invincible RS since 1996. When it was my primary burner here in Mass it was an absolute beast and gave me many many years of great service. In 16 years I've put in 2 control boards, 2 flame guides, and 1 combustion blower. When I bought the P61A, I retired the RS to my cottage in Maine. Prior to that install I took it to my shop on a pallet and gave it a COMPLETE tear down cleaning. The install in Maine is a straight vertical run through the roof of 12 feet. My EVL was a little close using 3 inch pipe so I went with 4 inch. Here's the deal. The stove doesn't perform anything like it did when it was installed here. The flame is lazy and the distribution blower just doesn't seem to have the same "umph". I run it on stove temp. The distribution blower is completely clean...it just does blow as hard. Has anyone ever replaced theirs in an RS? The door gasket is nice and soft but does NOT pass the dollar bill test. It is the original gasket so I know you guys are gonna tell me to replace it but I'm far from convinced that it the whole problem. I pulled out the combustion blower and it is clean. Is there a way to test it? Again, the stove is completely clean and I've burned about 6 bags of SC since the install. I never burned SC in this stove so I'm going to try some GTs to see if that makes a difference. Looking forward to everyone's advice and counsel. Thanks in advance.