[wdietz186]

If the hex in the plug isn't completely buggered try using a short [ just longer than the depth of the hex in the drain plug] socket. The short length reduces the tendency to pull the socket sideways when trying to loosen the plug. I've made a couple out of longer allen sockets using an abrasive cutoff wheel and kept the edges of the cut sharp to provide a little extra bite inside the stubborn fastener. They're really needed if trying to unscrew those 4mm hex countersunk head screws they use.