RE: upgrading servo's
it would, but you will pay for it, (if you read what i said, i did say "most" not all) those are big wheels to move on the ground while not moving, it would take alot of torque to move those wheels at a dead stop. i have the spektrum setup in my hurricane buggy and the front wheels move fine with the stock servo's. there are 2 servo's in the spektrum, on for steering one for throttle, make sure you have them setup the right way.