I'd like to hear the opinions/experiences of anyone familiar with the Surfmaster PI. I have the old style black o-ring and have to use the machine before I can get the newer red one. I ordered one but they delivered the wrong gasket and the backup is not arriving before i need it. ( No dealers in my area ) My question: is it safe to use the machine with this gasket ? It appears to be in good shape and I have purchased some waterproof grease ( for plumbing ). If I coat the o-ring with it can I be relatively sure that it will be watertight ? I've read about the problems encountered in the past with the older style black one and don't want to fry the machine. Any tips or info is greatly appreciated. Thanks to all in advance.