Door latch problems (door slamming)

[mikesacs]

Having a problem getting my doors to latch without slamming.

1. I've replaced the hinge pins and bushings.
2. Removed the strike and alignment wedge, centered the door in the opening using the hinges.
3. Added the alignment wedge to lift the door slightly. Like the book says.
4. Moved the strike in every direction and have the best possible location, I think.
5. Lubed everything.

After all of that it only improved slightly. Is it a sloppy latch? Do I need to replace the latch? Any suggestions? I'm not expecting it to close like a new truck, but I'll break some glass someday doing this.