hey guys I'm in the process of upgrading my MERV to 1/10 castle power. i'm putting in a castle creations mamba max pro and the castle 5700 Kv. This may seem like a dumb question but is the shaft on the 1/10 motor larger in diameter than the 1/16 motor that came with it stock? i am thinking that it should be so i'll need a bigger (in diameter) pinion in order for it to work. on amainhobbies, their isn't shaft size on the velineon 380, but the 1/10 motor says it's 1/8" in diameter. thanks guys. o and has anyone did this to their MERV?