I'm going to do an exchange for a new one this afternoon. I'm thinking I would rather just burn it in myself and go from there to start fresh. I looked at the OS .18, but based on all the forums I've read although its a stronger engine it takes as much tuning as the 3.3 and for the extra $100 I'm just not pro/hardcore enough to really see the difference, I don't race, I just screw around with my nitro. Hopefully that'll cure my issue!