i know modding a 500 isn't the best way to go, but under limited budget, can anyone suggest things I can do to the non-APV 500 case reed motor? ive seen some people remove the airbox and cut holes/mesh in front of body and wondered if that would be worth doing. maybe mill the head a bit? anyone done the math or actually milled theirs that could specify dimensions? any suggestions welcomed. again, i know its a 500, just looking for a little bit more spunk for relatively low cost. thanks.