Glad it worked out for you. Those modulators are goofy inventions, one tiny problem and it'll turn your hair grey.

When I pulled out the old one, I found that the pintle on the end had no tension. The new one took quite a bit of force to push in. An obvious difference. And tranny fluid leaked out of the old one when I held it up on the end and pushed the pintle in, if that'* an indication of anything.

If the modulator is leaking fluid, replace it. It'* cheap, and if it'* leaking, it IS causing you problems.

Hmm, I've got the set screw all the way counter clockwise it will go, and it still shifts pretty firm...

Well some of those 4T60-E'* can shift pretty firm, i know my grandmas lumina sure does. You must have a better tranny than you thought