2000 xj auto trans problem

Here's the deal. I recently swapped out my engine with anitfreeze wiped bearings due to that lovely 2000 head cracking issue. But when I got everything back together the trans was acting up. It was perfect before the swap. I checked the fluid and its good and up to correct level.

Here's whats happening:
-When the engine iss cold its takes 15-20 seconds to go into drive. I've tried running it back and forth through the gears, but it still takes the same amount of time.

- The trans shifts tight and quick and acts completely normal after it is in drive.

-It does not do it when its hot. But once it cools completely... it does the same thing again... a 15 -20 second delay before going into gear. If I rev it up a little it seems to go into gear a little faster.

Whats the deal? Fluid/pressure problem???

Did you re-attach and adjust the the throttlebody->tranny cable? No pinched lines from the tranny to the radiator or tranny cooler?

yup. adjusted the cable. And I check the lines and they're fine... That was my initial thought. I looked in the Chrysler service manual and the tranny screen looks awful close to the bottom surface of the pan. I did have the trans supported under the pan. I wonder if the pan could have flexed enough to pinch the screen a little. Hmm...

I think you'd have to dent the pan in quite a bit. It does sound like restricted flow somewhere, that gets better as the fluid warms up and thins out.

Yeah. Thats what I've been thinking. The pan looks fine. I'm gonna go over the lines again and see if I missed something.