I figured it had to be either the Hi-Limit Thermostat, or the Dryer Thermal fuse, and since they were not that expensive, I ordered both. The video's supplied by AppliancePartsPros.com were very helpful in explaining exactly what to do. Once I got inside the dryer, it was pretty obvious what was wrong, the squirrel fan, lint trap housing, and much of the lower part of the dryer were filled with lint! Somehow the casing from the dryer trap housing that butted up to the squirrel fan had come a bit loose and left a gap. I cleaned all the lint out, replaced the fuses, and dryer is running good as new. I think I will do an inspection again in a few weeks/months, and make sure it is not accumulating lint again. (And yes, I clean my lint filter every single time!!!)