Who knows Dodge Ram auto.Transmissions?

Got it out and all rebuilt but i ran into one problem can't get the parking rod to go into place it's close but it's holding just enough pressure that i can't get the valve body to drop into place. I tryed turning the shaft but that didn't make any difference, any ideas or solutions of how i can get it back in place? This is all that's left to do then i can put it back in!