terrible grinding sound

[ReV:-O]

thanks for all the help guys i appreciate it.

yeah im still waiting for the other pinion to get here its taking ages, probably cos of the snow i guess.

the grinding noise is actually louder than it sounds in the video, its just bad quality recording.

i'd been running the MMM combo in my e-revo and its been fine, smooth as butter so i dont think its causing any problems.

at the moment is has a spider diff on it, and it kinda all screws together. would i have to buy an entirely new one to get a plastic spur or could i just screw one on?

also its not just noisy but theres friction as well, it takes more effort to get it rolling since its not smooth, and when in neutral it will stop quickly rather than coasting for a bit

cheers