I have a Jandy Legacy 250 natural gas heater. On the left side of the heater, there is a polymer/plastic threaded drain plug (part 43 in the diagram below). I have partially stripped this drain plug and now water squirts out whenever the pump is running. I have it holding right now by using some teflon tape. I'm about to order a replacement plug hoping its the plug itself and not the polymer housing on the heat exchanger. If a new plug doesnt do the trick, is there a way to fix this short of glueing the plug permanently in? I live in Georgia and dont close the pool for winter so I dont really have a need to drain the exchanger.