I've been kegging for the last 12 months and I'm having a problem with my keg. The beer line (out) is extremely hard to connect to the keg. Once it's on, no leaks though but after a couple of months, I'm seeing some wear on the ring , propably caused by the tighness of the connecter. Anything I could do with that ball lock ? The co2 side is just perfect, only the beer side