Oooh..thank you! I wish I knew the size of the seatpost...but like you, I found nothing on their site, nor in my owner's manual regarding the diameter. I suppose I could just measure it, but I'm not sure how a teardrop-shaped seatpost is even measured. I'm assuming it would be at the widest point?
I'm stopping at my dealer with my bike tomorrow, and will show them a pic of that seatpost you linked to and see what they say about it.
Linda
ETA - after looking more closely at those seatposts on the PBK website...I'm not entirely sure that those are teardrop-shaped...so I don't think they will work with my set-up.