Maintenance Help for XX4 WE

[kurpal]

I have a XX4 WE since 2000. I left it for over 3 years and now I am setting it up as Brushless. I need a little help with what I should watch out for. Do I need to rebuild the Diffs? I have never done it before. Should I switch to ceramic diff balls?

Previoulsy, I ran Orion 6Tdbl brushed motors and now I have Losi Brushless 7500KV. I run the 84T spur and 16T pinion. Gearing will take time to test but I have read most people running higher tooth pinions.

Also, does anyone modify the slipper assembly?

Any help will be greatly appreciated. Thanks a lot.