My dryer started making a thumping noise and the drum is off balance…It worked loose the screws in the center of the tub that secure the tub to the shaft support…the belt is fine and nothing is rubbing…I need advice please 
You will probably have to replace the rear bearing, shaft and check the front glides.
If you replace the shaft & bearing you should be able to use part number AP2142648, upper glide is part number AP3156144 & lower seal is AP2043044. Hope that helps
Nat
The front glides seem to be fine…so I will try replacing the shaft and bearing…thank you for your help 
Let me know if you need anything else.