Mad Monkey diff

[lordnikon]

It was pointed out to me that my diff was way to tight, no counter rotation when spinning the wheels by hand and very notchy.

I'm rebuilding it with new balls, plates, thrust bearings etc and it now feels super smooth and rotates as expected. Broken it in but sounds like a hoover when running.

Do these cars just have noisy diffs ?? It has the Kevlar 52T and kevlar idlers too if this makes any difference ??