I know that my eight year old Fireplace Xtrordinair Elite 36 needs the combustor replaced. But I'll be damned if I can figure out how to do it. The old combustor will tilt, but does not have the necessary clearance to allow it to be removed through the front of the firebox. I have asked Condar (supplies replacement catalytic conbustors), and several authorized dealers and have yet to get a response. Has anyone actually performed this procedure or maybe have instructions?