I have a well pump that is 2 years old. It repeatively goes of and on very quickly, when the pressure goes down to 20 lbs (where it is set) I have to hold it closed to make it fill back up to pressure. This is the 2nd new pressure switch I've installed in 2 days. I've check the lines and they are clear and there is no leaks in the bladder. Could the pump its self be bad? Or are there any switches I could adjust to make it work correctly? Right not when we use water I have to stand by the pump to make it pump back up to pressure.