Noob question 727 really low shift points

I am definitely a proponent of higher shift points, but 1-2 shift at 30-35 is really high even for me.:D
I have mine set for the 1-2 shift at about 10-15mph and the 2-3 at about 35 under normal light throttle around town driving.
More throttle makes the points higher of course, but it does bug me just a little that I have to do 5 over the residential speed limit to get into third at all but I have some pretty high gearing in the back.

So, I guess the question is how do I actually adjust to make the shift points different? Loosen or tighten on the cable?