Quoted from SteveBFL:
"The other adjustment is where the cable attachs to the throttle linkage. Ther are a number of different arrangements but basically lengthening the cable housing in effect shortens the cable and visa versa. Shortening the cable makes shifts later. I suspect that making your shifts earlier could improve things but that depends on what happens now that the shifts are firmer. Since kick-down shift points aren't affected by this adjustment shifting earlier doesn't necessarily reduce performance.
Make your adjustments small and try things in both directions slowly (drive for a while in between to get a feel)."
Steven, I'm sorry to bring this back up, but can you be a little more specific on how I adjust this? Thanks a bunch. BTW, I love the slightly firmer shifts... really noticeable and the shifts feel much stronger when accelerating hard. Thanks again!