Fill the Xtrol well tank until the pump automatically turns off.
Open one of the drain valves to drain the water from the tank.
Adjust the cut-in adjustment screw -- situated on the top of the pump -- clockwise slightly with an adjustable wrench, if the water flow pauses during draining.
Close the drain valve and allow the tank to refill, monitoring the time necessary to refill.
Open the drain valve again and watch to ensure that you don't have any more drainage pauses. If so, adjust the adjustment screw again. If not, refill the tank.