I have lost water pressure - the water is spraying out from all directions instead of out the nozzle. It worked when I did the front of the house, but after moving it to the back, I lost pressure. I have pressure from the hose, but not thru the handle/nozzle. Is there a switch or something that could have moved when I moved it. Any suggestions? This is only 1 year old and have only used it 3 times.