Originally Posted by RoyJ

Claus, I'm running the stock insert 8mm. My first 20 min A-main race with the K9 I ran the 053 pipe, and came in for fuel at 9:45. I finished the race in 1st place, with maybe a lap of fuel left. The mileage on the JP3 was not as good. The RB2045 seems to be most similar to my 053 experience.