One of the best things I've ever done to make running my stove easier is to get some cheap furnace filters at Lowes. I think I paid less than $10 for four 20"x20".
The blower on my Harman has a ring on the inlet that I take off and sandwich a small piece of the filter material in there and it keeps the blower wheel nice and clean.
Just had to replace it so I was thinking of it and figured I'd pass it along.
