This engine is very smooth. Pinch is alot more than a VSpec but nowhere near as bad as an Alpha. I ran mine with a 2050 at Rd 2 of the RC Pro National Series and was suprized. Im up to 2 gals on mine with no mechanical pinch but still more compression than a VSpec at the same point. The 2050 was extremely smooth but was alot more fuel thirsty than the 2060. Overall I think it will be a great engine and should out last the VSpecs and day of the week.