When I was winterizing my Trailer I thought it would be a good idea to remove the small screen on my external fresh water intake valve (the one that hooks the trailer up to outside water source) and pushed the valve in a bit to get the RV anti freeze to fill the valve. I replaced the screen and left it for the winter. It now seems that I have a leak at the valve when the system is pressurized. Anyone have any idea of what I messed up and how to fix it. I seem to remember reading about an O ring that can be replaced but I can't find the information. Thanks for the help. Ted