I'm a pellet newbie. Just paid lots of $$ for an install of a Harmon p43. It still seems to be leaking a whisper of smoke, and they put about a whole tube of caulk on the outside of the pipes. Is this standard for pellet installs? You can't see the pipe, thank goodness, but this just doesn't seem right to me.... I'm definitely calling them back because I'm still seeing smoke on startup, but should I ask them to re-do the whole thing?