I seem to be having a pretty hard time removing my ball lock quick disconnects from my corny keg stems. There have been times that I have had to grab the base with pliers, twist and pull up at the same time. I have the white connectors on the gas in stem and the black connectors on the liquid out stem so I dont think thats the problem. At times I've had issues with removing the gas and the liquid sides on each of my three cornys. Its not that they are always terribly difficult, but it still seems that it shouldnt be as hard as it is. Is anybody else having simular issues? Am I just missing something?