Problem is I've had bad luck with the VG's. One of them the crank walks back and forth about 4mm and hits the crankcase internally. The other one developed a front bearing leak that was horrible. Both less than a gallon. Then my awesome 3 port Novarossi 21BF broke the con rod bushing into pieces after about 5 gallons. And apparently this is to be expected from that 3 port. All that and I'm much improved from last year, so it's time for the next step up. I think the 3 port might be holding me back slightly. I'll find out though. The 21BF is getting refreshed for a backup, so the 5 port can be the big race engine. If the Plus21 is too much I can always let off the trigger. LOL.