I was mudding my vaterra Halix in the swamp. It has some of that grassy shit that wraps around your tire and forces your motor from moving. When I was done I rode it in my yard for a good 2 minutes until I went up a hill and only the front tires were moving. Also the rear left axle was moving but not the tire, and the rear right tire and axle weren't moving at all. I have a metal spur gear which I was warned could strip the diff!
If anybody knows what is wrong please help me! Thank you Aedan...