Transmission Not Shifting

[Kisner]

As far as the temperature goes, it was pretty cold the only time I drove it down the road. I'll let it warm up next drive. The modulator is brand new (replaced about a year ago, but guess it could have been bad to begin with). The lines and rubber are all new, correction reproduction length and bends, and not kinked anywhere. I'll do as suggested and drive a ways in reverse. Would anyone recommend I add some kind of seal conditioner or what that do more harm than good? I also know the vacuum coming out of the back of the engine will determine the shifting points so I guess I need to figure out how to check that. Time to dust off the shop manual again. After I drive it quite a few more times, I'll post an update and hopefully it'll will be working much better.