We recently bought our home and have been having issues with the well. The water softener and pressure tank were just replaced. When I was shopping for a pressure tank I realized that my cutoff pressure of 70psi was high. After further investigation I noticed the pressure cut on was at about 58psi. I attempted to adjust the pressure switch but I was unable to reduce the cut-on pressure to 30/50 psi as recommended by the pump manufacturer. The pressure switch started chattering and the cut-on pressure limited out at 45psi. Even after increasing the cut-on pressure I continued to have problems with the pressure switch chattering so today I replace the switch. Same problem! The brand new 30/50 switch is operating at 58/70! I checked the pilot tube from the pressure switch to the discharge side of the pump, clean and clear... If anyone has an idea to get control of my pressure I would be very grateful. This has been a huge headache and after a couple of hours of searching these threads I couldn't find a similar situation. Thanks!