I took my Aftershock mud running about a week ago. It ran fine but after a while it died out. I had thought that it ran out of fuel so I just took it back to the car and went home. Last night I took the motor apart and noticed that there was a little surface rust on the crank. I was just wandering if I have hurt my motor any Here's a few pic's, I had tried to polish the rust off before I took the pic's so a little of it is gone.