I'm looking for some input on the shift firmness selection. My car is a 69 Riv with 455 & TH400. It is a street/strip car that is mostly used on the street. I usually have a mix of intown cruising (stop&go) and highway driving. I want the shifts to be firm but not neck braking. If I was to follow the instructions I would fall into the "Range#2 & #3" area. I've read online that transgo is pretty conservative with their hole sizing and that drilling "hole A" out to .125 (1/8") and same for "Hole B" or can go up to .140 (9/64")on "Hole B" see attached pic of transgo hole sizing.