I cannot find any actual videos demonstrating how to do a deep clean on my 3 year old Ecotec pellet stove. Needs something. No longer dealer nearby to do the job. Had to replace pellet burn box x 2 and it is giving out again (too hot) FIREEX recently looks bad. Difficult to adjust (not a tech person) but suspect it needs deepest clean. Removing outer panels? Any help appreciated but feel video might be best.