Slabside door striker problem solver

The wife and I took out the 68 today ( top up, it was low 40's this AM) and she had some trouble getting the passenger door to latch tight. I ending up nearly slamming the door to get it to its second latch position, and shut tight. Up until now = everything worked perfectly! So when we got back home, I was dead set on getting things "adjusted" to eliminate this very annoying issue. All the components were tight / aligned and appeared to be operating correctly. the plastic slider in the door...

Slabside door striker problem solver
Author: MOVE N UP