I just changed the gauge that follows the water pressure tank.  I replaced it with one from Home Depot.  I will double check it when i get home.   I was thinking there may be a block from the well to the water tank causing a drop in the pressure.  Is that possible?

I have a Jet Pump and it is cutting in at 30psi and off at 50psi.  This is fine because that is what the pressure switch is set at.  The problem is that i have a Pressure gauge hooked up after the water pressure tank and it is reading 10psi less than the Gauge above the pump.  i pressurized the tank to the proper setting (28psi).  Where am i losing pressure? When i first checked the Water pressure tank when i drained the system it read 10psi, and i filled it to 28psi.  is my pressure tank busted?