Thanks for the reply's. I didn't do anything today, but i will try these options 1st thing in the morning.

I will remove the transmission pan and inspect (maybe remove and clean out the) valve body. When i replaced the modulator i did not do any adjustment to it. I will try adjusting modulator pressure with my trusty mighty vac. My cable has spring return when i pull and release. So i hope i can resolve my issue with these options. I will take pictures and post any result good or bad.

Trevor the cable goes from the linkage to the passenger side of trans just behind where the dip stick tube mounts to trans.