grinding noise / metal dust

Terrible squeaking / grinding noise on dryer. When I took off the front panel, I noticed alot of fine metal grindings at the front right of the dryer. When I rotate the drum by hand, it feels/sounds like it is rubbing against metal.

Any ideas?

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=MDE3500AyW

Sounds like your front glides are shot, Item 30 in Section 7