Could it happen when you shake them?? I have this problem now and I am also new to kegging. Don't know tho'.
Drinking Blonde, APA, Oatmeal stout, End of year hops IPA
Conditioning Oatmeal stout, End of year hops IPA
Secondary Kate RIS clone
On DeckRussian River APA clone, Green Flash IPA clone, Belgian Dubbel