What about gearing for a med-large flowing treated pavement track for a Cyclone touring car running IB4200's???? So far I have found that a 7.05 seemed to work the best 150f but topped out 3/4 of the straight.........I was faster with a Team Scream C2 geared 6.37 and came off at 145f. Just wondering if that is what other people are seeing. I am running F-brushes and red springs on both motors.