So does the 5-port provide good torque? My VG .21 shot craps after 1/2 gallon. It looks like a ton of dirt passed through it. And I don't know how this would have happened. Unless the ports weren't deburred well enough from the factory. Well I was PO'd. So I need an engine for my truggy now and would like to try a GO for next year. Plus I'm ready for some big power now. The VG was ok but I need much more for truggy to be able to drive like I want.