I am here to ask for help about my water well. It started to lose pressure and kick the pump back on every 20 seconds and also the pressure switch was chattering. I assumed the check valve was faulty and the pressure switch wore out so I replaced both. Now it holds the pressure but to my surprise, the pressure switch (square D) keep switching on and off like 3 times every second for a while, sometimes half the time the pump is on. The pressure tank after it is old but but I check the pressure and added air to about 36 (It seems like it keep filling with air keeping pressure at 36, maybe that's part of the problem) also, the pump , check valve is 1 1/4" then down to 1" where the pressure switch is within 10". I dunno if that bottleneck could mess with the reading of the pressure. Any suggestion?