Brother Drum Paper Jam

[AmberSD]

I was having a paper jam on an MFC-7340. I finally tried replacing the drum/toner assembly and VOILA...no jam. I determined it was the DR-360 that was causing the problem. From what I can see, there are three little wheels that sit in side the base of the drum, with little arms to hold the wheels. One was broken, two are missing. I hate to have to replace the whole danged drum, when it's just these 3 little pieces that can be so easily replaced. They can't cost a penny for all three to be manufactured. Any idea where I can get them? I've called Brother, they don't sell parts. I have googled, binged, amazoned, and ebayed... someone must have them, but where??? Thank you/