Just had a 120 foot well dug and a 1-1/2 hp pump installed. There is a very loud vibration coming from the pressure tank/regulator unit. It vibrates through the entire house. Contractor came over once, lowered the pump 10 feet and added another 'shock collar'. It seemed better, but is getting worse again. How do I know if it's the motor or just my copper pipes vibrating? Are there ways to dampen vibration in the piping, particularly close to the pressure tank?