Jeff's 727 rebuild thread

OK Jeff. No worries! After what I learned in the shop this afternoon I am convinced your 1-2 shift valve is in the wrong way round. I disassembled 2 VBs. One with PTKD & 1 early model without, just to see if there is a difference. The difference is in the geometry of the 1-2 shift valve, but they both work in the same way.
The valve must contact the 1-2 govenor plug when the car is at rest. If the valve is in wrong, due to the diameter of the lands on the valve it will not make contact. The 3 lands all look the same diameter but the innermost land is 0.012" smaller. Also with the vehicle at rest the valve will not cover the channel that feeds line pressure thru the channel casting to the front servo piston, applying the piston & giving you 2nd gear at rest. A quick & painless fix. I dont have anything else if I'm wrong. I'll have to do some serious homework. LOL