My pump is leaking at top of the volute band clamp. I learned that word "volute" from the pump manual I found online. The motor label is clear. At 11 amps and 220V I conclude it is a 3HP motor. When was it made? The numbers V38-130 are molded into the pump housing. A google search shows this matches the volute for a Pentair Ultra-Flow pump. Are their some additional markings I should look for? If there are none, how do I determine what size impeller I have? I could just assume it is a 3HP impeller to match the motor.