8 kegs, bought used have a few questions

So I bought these used kegs from a brewery that was/is starting up, the price was good at 20 bucks each, all were supposed to be converted over to ball lock


Now I'm trying to get them setup for a pressure test and realized I have a few different styles of kegs, all threaded or cross threaded with the wrong posts,

The posts they all came with

These posts worked on 3 of the kegs, spartan and Firestone brands
Now I'm stuck trying to find posts for the rest of the kegs, labeled Cornelius went to the local brew shop and found one set of these :



But these only work on a few, as the others require posts with Les thread depth to seal up on the gas/liquid tubes... Anyone have any suggestions on finding the Cornelius fittings with the shallow thread depth at a reasonable price? Or where I might trade my other ball lock posts for the right ones?

Ps I have lids for all, just need the right fittings and not at 15.99 liquid and 18.99 gas

http://www.cornykeg.com/index.asp?category=29144
$11 for a set with poppets. Cornelius os different thread than firestone. They have both.