Firestone Challenger Keg leaking out QD - HELP!

[DonutBrew]

Hey guys,
I recently acquired some Firestone Challenger racetrack-lid kegs. I'm having trouble getting them not to spew liquid out the quick disconnect when I plug it into the out post. These are the kind that have the little annoying white nylon washers inside the post. I don't have replacements at the moment, but they look like they're in decent shape, I'm just wondering if I'm putting the whole thing together correctly and i can't find detailed instructions online.

I am putting the nylon washer, large side down, onto the top of the keg, then tightening the post down over it. I pressureize it and it seems to be OK, but then when I put the liquid quick disconnect, it spews liquid out the top of the disconnect! Any suggestions?

Thanks for any help you can give me.

 

[JRems]

If it only leaks when the disconnect is on, either the disconnect is damaged or the post o ring is not good. Are you sure you are putting the disconnect on the right post?

 

[DonutBrew]

Damn it. Thanks for making me try another QD. Looks like the first liquid disconnect is F'd...And I wanted to blame the old keg.

Now, any idea why a quick disconnect would break and shoot liquid out the side? I've only used this one once before...It's a barbed one.

 

[JRems]

Take it apart and see. The top opens with a screwdriver. Turn it in the slot. I think you can buy replacement parts for them. I'm sure someone here knows.