I have a "05 Hawk with a Suburban furnace that some times works and some times shuts itself off after a minute of blowing. Perhaps it needs some maintenance. I have tried FWC site manuals, Suburban site and archives on this site. Brenda at FWC sugested a few Youtubes, but nothing seems to look like my model. Anybody done some service on theirs? Do you need to remove the whole thing to get to the burnner box?