I have a Mark V and it's just recently dawned on my how weird the frame geometry is.

I have the 62cm frame but the top tube is too long and the seat tube is too short. Compare another 62cm frame in terms of heat-tube and seat-tube length and the Mark V is usually short by at least 4cm.

What this means is that the vertical distance between the tops of my handlebars to the the top of my saddle is about 13cm. This gets very uncomfortable and I've tried multiple handlebar/stem configurations to get it right. I think I need to get a much shorter and much greater angled stem (and consequently, the bike loses some in aesthetics).

It took me a year to realize how important fit is, don't my make same mistake.