I have a leak problem at the very end of the flexible hose at the nozzle. Water leaks out where the flexible hose enters the nozzle body. I have removed the end of the nozzle thinking that the washers at that location need replacement, but water still leaks out at the location where the hose enters the nozzle. Q- How do I dismantle the nozzle body? And is there another washer in that location?