Hey guys so I got a problem. I was leaking diff fluid about a month into owning this car so I called Traxxas and they were cool nuff to send out 2 rebuild kits since both from and rear were leaking. It was my first time taking these things apart but they are fairly straight forward (or so I thought). After taking everything apart and even using a new housing (cause I also stripped the last ones for the screws on the bottom to screw into) I put it back together and noticed a grinding/gritty noise. There is a lot of resistance almost like the gear is rubbing against plastic/metal and I cant find any signs of ware after reving the engine a little bit to try and find out maybe if it was rubbing somewhere. I been at this for 4 hours now trying to figure it out and took it all apart 4 times and then played with it and it really only goes together one way. So I am very confused if anyone has any ideas what to look for or maybe there is a common mistake it would be very helpful, Thank you very much.