Hello everyone. First off let me say, I am a complete newbie on pumps. The last few days I have learned more than I ever thought I would about them. And I know it isn't enough.lol My question is why does my water start out with great pressure then drop off to a trickle? The pump recently went bad and a local guy put a new motor on it. Went from 1/3 hp to 1/2. Changed the controller to the proper panel. Also changed the pressure switch. Square D. Pressure in air tank is 35lbs. I suspect pressure switch, but I am usually wrong about these things.