TV cable is main control for transmission pressure response, set it correctly to specifications for durability of unit, then check speeds at light, part, and full throttle and write down engine rpm of each shift, if only full (WOT) throttle speeds are low but consistant rpms at each shift point then you may shim/increase TV limit spring to increase engine speed for WOT shift point, BUT DO NOT proceed untill you verify normal driving shifts, failure to pay attention here will get you nothing you want, ie: smoked unit. there is NO easy way or tricks involved in doing this but if you are a lazy "Want it Now" personality, go right ahead and play with your cable, you'll not go far.
Kevin.