RE: NO PUNCH LEFT
Have you tried an [link=http://shop.boomtownhobbies.com/product.sc;jsessionid=3552252079DE0862FC023C771DDE 2E42.qscweb23?categoryId=2&productId=14]Upgrade Battery[/link] that provides more power for your new extreme motors, also make sure that your gears are not binding with the new motor instalation.