For the last month or so none of my soaps have any slickness after a pass with the razor. NONE. I've tried 4 different soaps and they are all the same. In the past, the slickness seemed to build with each pass but not now. I've added more soap, added water, worked the lather longer and it's still not slick. The only thing I can figure is the county changed the water at the treatment plant. I don't know what to try other than using a pitcher of filtered water and see if that's it. What do you think and what else should I try???