Firebox/Hopper Parts

My hopper caught on fire the other day when i was starting it to cook a brisket. I got it all extinguished, removed all the old pellets, added fresh pellets and restarted. After a minute or so of holding the prime button i heard the auger wind down and eventually stop. Ended up tearing it all down and found that there is a little plastic/teflon bushing on what looks like a centering ring on the auger that had melted and caused the auger to rub hard enough on the throat to actual stop it. I looked at our local-ish vendor that i bought it through (all things bbq in wichita) and can not find the part either separate or with the auger. In the operators manual i can find a part number but no luck on finding a place to buy it.
Anybody know where to get them from so i dont have to machine one? Thanks in Advance.
Grill is a YS640
Mitchell
Anybody know where to get them from so i dont have to machine one? Thanks in Advance.
Grill is a YS640
Mitchell