Does my 1997 5.9 360 magnum have a vacuum modulator? If so where at

What is your question?

1997 dodge ram 1500 5.9 360 magnum 46 re Having trouble going from first to second have to let off gas inorder for it to shift then third and fourth are fine has rebuilt transmission changed filter and fluid (now dealing with a leak because of rubber seal) going to.put in cork today no noises other than rpms

What makes this problem better or worse?

It's worse when not babying it

How long has your 1997 Dodge Ram 1500 had this problem?

Couple days