We just installed our older squirrel stove, and did a 3 day long continuous test burn. We currently are waiting for the correct thermometer that will go through the double wall pipe to arrive in the mail today ( I ordered the wrong one at first). We are new to burning and so I am wondering if this is due to not burning hot enough fires? Or if there may be another issue. We made sure everything was level and that the horizontal pipe was angled up a quarter inch for every foot. Should we let the fire die and take the piping off and clean it, it’s only been running for 3 days. Firewood is seasoned mixed hardwood. Help!