I'm stumped and need help. I'm losing water pressure in my home. I have a submersable with a 1 inch line coming in. That line runs into a cycle stop valve which goes to a check valve then through the T into a pressure tank. The pressure switch is set 40/60. What it's doing is as soon as I turn on the water the pressure drops to half at least and if I run two things at a time it trickles out. Some of the things I have done replaced the pressure switch. Drained the tank and refilled the bladder to 38psi. One other thing I did was connect a hose to the pressure tank which I had a lot of pressure coming out and also when I turned on the faucet I didn't loose the pressure at the sink. Thanks in advance.