i bought this truggy used. it has an airleak on both go motors i got with it. one go is in my buggy other is in my truggy both have been fixed. i havent made any adjustments on the truggy other then tune and switched exhaust pipes fromt he jp3 to jp2. I want a good low end but also a good high end. i know thats not possible but like a happy medium is. The nitro pit your able to reach high speeds and thats where i will be runnin this truggy at