To make the shifts occur later, turn the screw in clockwise, softer and earlier shifts, turn counter-clockwise.
mostly minumum shift points, part throttle shift points and feel. Want a quicker shift, put in a shift kit.
A shift kit would be a waste. This is on a TH350 that was originally behind a V-6. The Vacuum modulator was something I was experimenting with to see what it can do.