[Steve Viegas]

Frames are measured differently from manufacturer to manufacturer. There is no standard. Some measure from the center of the BB to the center of the top tube, others measure the furthest points. My point being, they may not have measured incorrectly, just differently than you did.

That being said, the geometry of the bike should not change. You can change the feel of the bike with a different stem, bars, crank length, seat post height as well as seat position on the post. Also, the forks will have a great impact if only on how the bike handles.

I am sure, with effort you can make this bike comfortable.