Tatiana and I finished up the shift kit installation today.
So per TransGo instructions you could go nuts and drill the separator plate to .125" (also known as the Sloppy Mechanics solution) - but, then your ability to tune it goes away; and that is where most people have to live with their choices when it comes to choosing shift firmness. Me? I am just going to tweak the tune to suit. That being said here are the hole sizes I used.
A (4) = .093"
B (3) = .110"
C (2) = .100"
Others options I have seen are A/B/C: .093"/.093"/.086" , .093/.105"/.125" (per my Jake's kit), and .098"/.110"/.081"
I used the BLUE inner accumulator spring for "even firmer" shifts.
Drilled a hole in the Chinesium dipstick to mark the pan rail, and put a SHCH through the unused bellhousing hole to mount the tube.
I should add that installing the TCC regulator valve was a horrible experience.