Hello
I have Savage does anyone have fix for front and rear diff. mine leaks diff oil from the bottom i tighten screws as much as possible but still leaks'
The differential case gasket is HPI part number 86099. The o-rings for the outdrives are HPI part number 8611. Maybe put a very thin layer of silicone on the case gaskets during reassembly.
To add to what Rooky said, once you replace those gaskets and O-rings, you shouldn't have to hulk out on the screws to keep it from leaking. Just use threadlock to keep the screws from backing out.