All of sudden today the rear end of our rustler starting making this terrible ticking noise. I have completely tore this thing apart. The last 4 hours I have taken the tranny down to bear bones and inspected everything, cleaned and re greased it. Put it all back together and the ticking is still there. I have read over and over its dirt in the spur, I have cleaned it and everything else like crazy. Also it is very wobbly in the rear end now. It seemed a lot smoother before. There is nothing broke that I can see..Im about to go nuts. Any Ideas?
Here is a short clip of what it is doing.