Hey guys, I just got my stampede a couple days ago. It is my first hobby grade rc car. I was doing some research trying to figure out how to replace the stock pinion gear with the high speed one. I can't seem to find any information on how to do it. Do i just remove the gear cover and change it like that or do I need to take the entire motor out? Also will I be able to do this with just the tools that came with my truck because I read somewhere that I need a gear puller or I will damage my engine. Please help a noob out! Thanks guys.