I have a 1993 Cal Spa Classic vip with ps4. I have found a leak where the thermostat is in a plumbing elbow.It looks like someone broke the nut on the elbow and siliconed it on and it must have been that way for awhile before I bought it. I would like to know where to buy one of those elbows. It is between the heatpump wetend and the heater. I was thinking I might silicone it for time being but I need a new one. Thanks!