Anyone here use the dirt hawgs???? How do they perform? I just mounted them on the mt2 I cant wait till I can test them out. But I lost one wheel nut so I cant even play

I have a really bad problem here. I just took the cvrx out of my other car and ripped it appart. Its full of rust on the starter shaft and crank. I cant get the sleeve out. Any ideas??????? Heat maybe??????? All the fuel that I use said that its got crap in it to stop rust and I asked the hobby shop about it and they said that I didnt need after run oil but here is the crazy part I have used after run oil in it just about every time.