noisy belt/slipping intermittantly

Unplug Dryer. Remove lower and upper front panels [remove wires from upper right door switch]. Lift up on belt idle pulley and take belt off pulley/motor.Remove Front Bulkhead and dryer lint/vent ducting. Note position on drum and remove belt. Unbolt top panel front 2 screws to allow room to remove drum.Remove drum. Take lock rings off Drum support rollers and remove old rollers. Clean roller shafts and apply hi-temp grease [I used ultra hi temp brake grease-ceramic based-small packet can be purchase fm auto parts store]. Re-install new support rollers and lock rings. Re-install drum and slide belt back into position. Remove and replace felt pads and glides into inside of Front Bulkhead. Reinstall Front Bulkhead and top panel [connect door switch wires].Install belt around idle tension pulley. Re-install lower panel.All parts fit perfectly and delivered quickly.Belt had just been replaced previously.