Do-It-Yourself Story

I diagnosed likely cause on internet, which was worn drum support roller and axle and ordered them. The video was extremely helpful and I even discovered that the person who serviced it ten years ago had actually put some things back incorrectly. When I moved existing rollers one was clearly worn. I replaced the rollers (but not the axles, which is just wiped and then lubed with some white lithium grease). I reassembled and the squeak was gone but I now had a thumping noise. I realized that the very old felt strip on which the drum rested had gotten misaligned. I took front off and realigned and now it is working perfectly and quietly. Also gave me an opportunity to vacuum massive amount of accumulated dust out of the unit.