My Ozonator seems to have developed a leak at the tube adapter. It only seems to happen when the equipment is offer. If the equipment is on and the ozonator is pushing air into the system, no leak (i assume because of the positive pressure generated by the ozonator). I have new tubes, check valves, and tube adapters on order. And just in case it was something else - i pulled the tube adapter, removed the existing teflon and reapplied that as well. The drip persists. I know these are annual maintenance items but am I missing something obvious that I should check or do?