Can't lock door unless I push in

[iriereggaeman]

So, I've been reading various posts on doors that won't lock without a good push. Mine is the same. I have removed the door panels and lube'd the heck out of the moving parts. I have also tried moving around the striker plate. Seems like folks have had good luck replacing the latch (at $80 a piece). I have already purchased a few things that I didn't end up needing, so I thought I'd post a video of my stubborn door. Perhaps one of you gurus can spot something obvious that I didn't before shelling out the money.

https://youtu.be/IVrkj_TSgfc

[iriereggaeman]

After quite a bit of time fiddling around with possible solutions, I decided to spring for the new latche(s). Smokinhart , clemsonteg , or anyone - if I have the latch/lock rods, and other parts already, can I just purchase the DOOR LATCH by itself? In other words, do the OEM parts fit the LMC latch?

Here's what I'm looking at:
http://www.lmctruck.com/icatalog/cb/full.aspx?Page=20 , PART 38-6484 "DOOR LATCH LH" (assuming this is the driver door

Thanks in advance for any knowledge in this area!

[iriereggaeman]

update: I ordered the latch itself:
http://www.lmctruck.com/icatalog/cb/full.aspx?Page=20 , PART 38-6484 "DOOR LATCH LH"
and installed it yesterday. It fit nicely with the existing linkages. It took a bit of doing, and I learned along the way. For instance, I found it best to also remove the door latch control and door lock knob completely. I also noted that the new latch didn't seem to sit quite as straight as the old latch in the door (see pics of new driver side door latch vs. old passenger side door latch)

Even with this noted oddity, the new latch solved my difficult-to-lock-without-pushing-in problem.

Now I just need to locate some longer door lock knobs, or something with a bit more real-estate to grab with my chubby, big fingers. Any pointers there would be appreciated.