I think your correct about the older they get but I'm still not sure about the water dipping. I know that's they way to break inthe brushes but I know that there's something that you can do to change the timing on that motor,not legal I know but not easily detected either. I know for a fact that there's some gys that do it. I ran in KS last year at a TCS and I have the M02L MINI that I ran with standard tires and this guy with a mini cooper with little tires lapped me twice and so did his partner. I finished 4th that year and 2nd the previous year.
F-1, Potato what gear ratio are you running? This will be my first year in F-1. I'm thinking about running a P2K2 Pro. Final gear ratio is 5.2