Ran my car with my new 13.5 on Sunday...what a blast! I just had to dial drag brake to my liking, and my car was really hooked up. At trackside, they are all getting their gear ratios around 5.0 or so...and my car was at 5.7(thats the lowest!...for now). I ran a best lap time of 11.3....while all those pro guys are running 10.5s. The difference is that I am more consistant...many 11.4s and 11.5s in a row. I do have a trick up my sleeve though, the F201 52T spur gear will fit the TB-02, so that will make my final ratio around 5.4. Should be able to hit 11 flat or less for sure! Remember I am one of the few with a shaft drive tub chassis...and I those guys are running top of the line stuff. I'll give you an update after the new years day race.
Merry Christmas by the way!