Door Stuck On Opening

All right y'all...

I've spent 3 days trying to figure this out. I've done a bunch of searching on FABO and Google but can't find an answer.

I put the doors back on my 1970 Duster. New door stikers too. Alignment is good. Up/down, in/out is good, body lines are matching.

My issue is with opening the door after it's been closed. It requires a medium-hard pull to get it open. I am outside of the car, reaching through the window to the inner door handle.
I feel like it should easily fall open when I pull the handle. On my E body, the door pops right open with a pull of the handle.

I have de-greased the latch mechanism inside the door, I have lubed the moving parts. I also placed an extra washer behind the door striker to move it further in towards the door to make sure the rotating catch wasn't binding on the collar.

When the door is open, and I use my finger to push the rotating catch (the piece that closes on the striker), it clicks into both positions easily. Then I pull the inside door handle, the catch releases easily. The outer door handle isn't attached yet.

The door closes easily, with a good seal. If I only close the door to the first "click" the door opens easily. If it closes to 2 "clicks", it requires some force.
I do not have the weatherstripping in yet. Maybe that will provide some outward force when the door is released?

Any thoughts?

Thanks in advance for any suggestions.