hey guys i got an os 18 tz tx for my nitro rustler. ive been useing it for a while now and the other day the pull start broke. So i took it off and now im useing a drill with the right size to fit the one way and been starting it that way. it makes a crazy sound at the start but it starts it. I just wanted to know theres lots of nasty build of dirt oil and grum all over my motor is this going to hurt the motors life span? or will nitro blast just fix it and put a new pull start on? Also i ran it in a baseball field and it fliped drifting and the air filter fell off and filled every thing with dirt i cleaned out the best i could what will happen if there is still stuff in there? what can i do to get it out? thank you if you can help me