I Have A 2hp Sta Rite Vertical Water Well Jet Pump Well Is About 70 Ft Deep I Have Low Water Pressure In The Home All The Time. It Gets Better When The Pump Cuts On And Fills Up But When The Tank Nears Empty The Pressure Gets Really Low Until It Comes On. How Do You Adjust The Home Pressure On That Pump Is It By The Regulator And If So, Is It Higher The Number Higher The Pressure?