adjusting the modulator will not make it shift later at WOT. The modulator only controls part throttle shifts. You can put in a 40-2 TransGo reprogramming kit and you can hold it in second to any RPM and then shift manually into 3rd.
1.8185 @ 60ft http://mmb.maverick.to/gallery/showimage.php?i=10971&original=1&c=6 I like the seat-of-the-pants kick from the 4:10's, but (I think) they're killing me on the top end (only 83mph). Looks like 3:73's are in the future...