I am lucky enough to have a Sears 2700cc power washer model 580-752060, recently, 1 year ago, the power hose attached crossed threaded the outlet of the washer, took it to sears and they replaced, did not use until now, and here is my problem and question. When the unit is running, starts fine, but no pressure, took to neighbor's outside facuet and same results. With hose on, pressing the trigger water will come out, when the unit is running, water stops flowing out of the wand, and the relief valve will blow out HOT water from under the unit. I assume the pump is now bad, has anyone replaced a pump on this unit, Sears is about 89.00 labor and looks like 165.00 + for parts, almost the cost of another unit. Any information input is appreciated. Dennis