Kelly,
Maybe, even tho' your sit bones line up well with the new saddle, the saddle may be too wide and your legs may rub slightly on it as you pedal. I think that could cause the feeling that you are getting from your shorts. Womens' saddles are normally made wider than men's. Do you have a womens' specific saddle? I'm really just guessing here but it's the only thing I could come up with. If you figure it out, let us know, okay?
Time is a companion that goes with us on a journey. It reminds us to cherish each moment, because it will never come again. What we leave behind is not as important as how we have lived." Captain Jean Luc Picard