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Thanks for the reply and suggestions.I called several dealers and what I found is not much support: former dealers who don't handle Calspa anymore (even though Calspa's website still lists them), or, dealers who are in the process of dropping their line. Ouch!! Didn't get a response the few times I called Calspa. Hmmm. Well I'll persist.Can anyone help me 'estimate' what size pump the missing pump might be? It's a 54 jet 7 person hot tub, Calspa Belair with two jet pumps, one pump is two speed (5 hp), the other pump motor that is missing (the pump housing reads 56 frame) is supposed to be a single speed pump.For those who work on hot tubs regularly, would the pump 2 (single-speed) pump in a situation like this most likely be a 5hp pump?What's your best guess?Thanks,Jack