Welcome SandyGirl and SheFly!

Sandy: You could just put some slicker tires on your MTB and it would help make the street riding smoother. Although I subscribe to the premise that one can Never have too many bikes - they do start to whine just a little when I walk by one that hasn't been ridden in awhile (like my MTB! LOL)

SheFly: TT on a tandem?? Now ThAT sounds like a blast!!! I would Love to see a pix of your TT Tandem!