Ball lock in very difficult to take on/off

[triangulum33]

I have 2 used cornies from MoreBeer. The black In disconnects are extremely difficult to take on and off (both kegs trying different disconnects). The grey Out disconnects are fine. Is this normal? There is grease on the disconnect bearings. The posts on the kegs dont appear to be messed up.
Any help?

 

[Lowry0031]

the 3 G's

Gray
Groves
Gas

In

the 2 B's

Beer
Black

You may have them backwards and the treads may be screwed up.

 

[Old_E]

I had this problem last night. One of my many. Put keg lube on the o ring. Worked like a charm.

 

[wildwest450]

Are the posts switched up? Gas posts and liquid are two different creatures.

 

[triangulum33]

Ah...I'm stupid then. Again.

 

[WAORGANY]

I have 2 used cornies from MoreBeer. The black In disconnects are extremely difficult to take on and off (both kegs trying different disconnects). The grey Out disconnects are fine. Is this normal? There is grease on the disconnect bearings. The posts on the kegs dont appear to be messed up. Any help?

I have bought used kegs before and had either 2 gas in or 2 beer out ball locks on instead of one of each, and you can easily switch them around while cleaning if not careful..now I always do one at a time clean, sanitize return and then do the other side, check your connectors if its hard to put on one of them is wrong either the ball lock or the black or gray as stated above.