Here's some very good LST2 advice: FORGET THE OS 30, get yourself an LRP Spec 3 or Losi 454(identical..), and put on a Mach 427 Spinstart backplate.. I hate pullstarts for MT's.. Get it started, go to put the body on, it cuts out.. Much easier to start with Spin-start. Plus the Losi spinstart doesn't have as many OWB slippage issues as the HPI Rotostart.. My Losi Spinstart is 2 1/2 years old and flawless.. Have NEVER had OWB slippage - and I tend to run rich, and with oily SW fuel...