Dryer was squeaking so I replaced the drum bearings with a kit. Once connected back together the dryer was no longer squeaking but seamed as if it did not want to stop spinning when I opened the dryer. I replaced the door switch and no the dryer no longer wants to turn on. When I turn the start switch it buzz but does not turn on. I take the dryer apart again and turn the switch on without the drum on, the dryer motor turns on as well as the heating element. So I believe that the dryer is working. I reassemble it and then it does not work. I take it apart again and it works without the drum. Not sure what is going on, but I believe it has to do with the drum. Please help.

When I remove front panel and try to start the dryer with the drum on it tries to turn but does not: However if I turn the drum by hand it turns with no problem, so does the motor. the belt is on as featured in the pictures. dont know what else to do.