Did a lot of internet searches about probable causes and watched videos showing how to do the repairs. Didn't really like the idea of having to take the dryer apart to such an extent. Happened across the video from appliance parts pros. The technician ran the dryer, and it was squeaky like mine. The video showed how to take the front panel off and sure enough, right on the front, the drum support bearing was all busted up. Ordered the parts (and two screws I had previously lost). Installed the replacement part along with the video, pausing and rewinding several times. It was a little tricky to get the front panel hung back on, guess I missed the part where you're not supposed to take the bottom screws out all the way. It took me about an hour to fix the dryer, not counting the time it took to get the front panel off.