Roadfan: frame size is 22" c-to-c....and I'm not a weight weenie either - just thought 30+lbs seemed heavy since I couldn't see dropping more than a couple of pounds with the normal upgrades....
Also, seatpost engraved 25.4mm (and I verified with calipers). Out of interest one of the spare stems I had used measured 22.05mm (plus or minus a couple of hundredths).
I must be very lucky since when I first started upgrading the bike, I had no idea about "french issues" and everything I bought just seemed to fit first time (almost all from used parts stores)....
Mark