Ok, i'm new to woodburning and want to make sure i'm doing things correctly. I've been up and running with my Quad 7100 for about a month. Burning seasoned hardwood (mostly black walnut, some ash, cherry and hickory). I usually run it pretty hot 400-600 stove temp, damp down at night but not all the way. I can't see up the pipe to check for buildup. So i'm wondering do i have the sweep come out once a year in the fall for inspection and cleaning or should have him come out during the season too?