The dryer (GE dsxh43ef0ww) was overheating. I replaced the cycling thermostat, but because I could not find any information about how to access the old thermostat, I ended up removing the drum before I realized that I did not need to.
Anyway, after I installed the new cycling thermostat , I put the dryer back together. It was no fun reattaching the drum to the shaft support, holding the heavy drum while trying to align the holes in the back of the drum with the holes in the shaft support. Maybe there is a trick to make that part easier. The numerous videos online show how to remove a drum, but not how to reinstall it...
The dryer does not overheat anymore BUT now the drum sounds like there is a pair of gym shoes tumbling (or more exactly one shoe), even when it is empyty and level.
I suspect I must have done something wrong reattaching the drum to the shaft support. I dread having to remove the drum once more in order to reattach it (possibly) better.
Any help on how to do that better (and easier) is welcome.