It was a bearing that caused the e-DR to not finish the Nitro Challenge so I got some new bearings. I got them from http://www.fasteddybearings.com/ b/c they they had all the sizes for the DR and at a great price. And it turned out they are all rubber shielded which means you can service them unlike the stock bearings.
You can see them at the bottom of the image:
You can see them at the bottom of the image: