I bought an Arrma Granite mega on Black Friday. I haven't had rc anything since I was in my early teens. Been having a bunch of fun with it broke a few parts but my LHS has them in stock. Upgraded my steering servo with one from Traxxas and it works great. I bought a LiPo set up recently and it ran great for the first few battery's now it seems slower and doesn't last as long. From reading on here I probably messed up the motor. What's the best brushed motor up grade to go with? Link?