O.K., so now I’m confused… I have the typical, short-shift (1-2 at about 2100rpm and 2-3 at about 2300rpm at full throttle) problem that lots of people seem to have. I researched it here and online in general. The pages that seemed to boil it down were: this one [http://www.v8buick.com/index.php?threads/governor-info.207490/#post-2127584] from this forum; the Hot Rod page mentioned elsewhere [http://www.hotrod.com/articles/hppp-1203-recalibrating-turbo-400/]; and, this page [http://www.gmsquarebody.com/threads/th400-shift-early-soft-no-kickdown.1107/] about vacuum modulators from another forum. I checked my vac mod first since it was easier to get to. I have good vacuum through the line but could not get the screw to move much. It was not easy to move at all but I got about one clockwise turn on it. This resulted in full-throttle shifts of 4000 and 4100 respectively. Wanting the shift points higher, I simply replaced the modulator with a new Belkamp single-red-line modulator from NAPA. Before putting it in, I checked the screw, which was screwed out fully, and it moved easily. I moved it in two turns for good luck, since there were no directions with it, and installed it. This yielded 3100 and 3300 rpm shifts. I went to adjust it in more and found that I could barely move the screw now. I also noted that once removed, I could easily move the screw in the old modulator. Since I worked midnights last night, I simply called it a day and took a nap. When I woke up I re-read everything but it seems everyone talks about either the vacuum modulator OR the governor. No one talks about both. AAARGH! So… can someone please tell me where to start, the vac mod or the governor? Or can someone explain their operations IN RELATION TO EACH OTHER rather than individually? Also, while down there I noticed that the electric kickdown solenoid is not connected. Someone prior to me never connected it and simply bent over the flat connector. If I remember correctly, this is bad in that the fluid pressure isn’t boosted at full-throttle shifts if that’s not working. Thanks, everyone, for all your help!