are you stretching your skin? sounds like the razor skipping is either the razor is sharp enough which we can rule out beecause its been honed, to me it sounds as though your not stretching your skin. Actually if your lather is too dry - depending on the soap - I've found it can toughen up the hairs alot and seriously affects how smooth your shave is.

try using hair conditioner on your face for 10-15mins before shaving, some of us just have really tough beards/stubble, my chin is annoying when I don't have time to prep it.