Hey Jim, thanks for the input. FUnny thing is I already replaced the one in the heater. The day I got the spa (used) my dogs were in love with some smell on the inside of the cabinet and managed to put enough pressure on the heater fitting that it snapped. Needless to say, I was not happy as I was getting ready to fill 'er up and break in the new tub! OH well, here's hoping my local Jacuzzi store has the fittings in stock. They had the heater fitting in stock, which tells me this is a common replacement.
Last question: Are you sure there is one on pump 2? I glanced quickly at Pump 2 but did not see one. It would completely make sense Pump 2 would have the same fitting, but it was getting dark and I didn't see one at first glance. Thanks again.