?racer

Its really a great truck and you will see, welcome ...

Most check & add the correct oils for the diff's & shock's ..

The kits do not include any oil .

Suggest reviewing Rc10.com set-ups and pick one that fits your track best.

When you do add diff oil , change shim's for the diff's ....

Most are discarding the outside shim on the out drive and adding a extra .2 shim under the sun gears .

Maybe your kit included the new .5 shim ?

If so disregard the shim mod and assemble as shown in the instructions ...