Gear noise

[RC_nut]

Hi All,

New here, and hope to enjoy the community.

I have a SC10 kit which I built, with a Castle Creations 6900 brushless, Momba Max Pro, Spektrum 2.4 Ghz and a HiTec servo for the steering.

When I give it the gas, I get a slipping noise in the diff. Is there anyway to stop this from happening. It is the stock tranny, with a 48P pinion 19T, and I had to use the 87 spur gear.

Any help would be cool.

Cheers!

Greg