I need to rescind my suggestion of wrapping electrical tape around the seatpost to mark the insertion point, at least if you need to fold frequently. I tried it today and the tape blocked the seatpost from being inserted.

in happier news, the 1 3/8 front tire solved most of my jarring problems. I still have a 1 1/8 on the rear at higher pressure, so that's still a bit jarring, but luckily I have more "padding" in the nether regions. too bad I didn't get a Brooks Flyer instead of an Imperial...

in less happy news, my flat today was due to a valve failure (precluding repair), and in my haste to swap in a new tube I blew it out. and no LBS in town had 20" presta valves for sale. needless to say, I picked up a stack when I got back home...