anyone have a good idea how to clean the upper baffle on a us stove 6100? i've heard of people taking the baffle out, but then breaking the bolts off. i usually run the vac over it with a soft brush. when i tap on the baffle i still get ash falling, so i know there's more there. i just hate to tear the whole thing apart at the start of the heating season just in case i screw something up. thanks!!