Posts for centrepulls are shorter (10mm) that those for cantis, but the OD is the same. Like was said the spacing is more critical with centrepulls than for cantis.
I came to just conclusion looking at pictures online, but I didn't see any drawings that confirmed it. So the post isn't going to come all the way out to the end of the Paul pivot. Since the Paul pivot doesn't move, is this a matter of any consequence?
I have gotten really close to ordering a set of centerpull bosses, but I have a problem spending
$10 on a $4 part. Here is a
blog post about the difference in these bosses
OP, I'm not sure you should bother clarifying the issue any more than you have.
I probably would consider the Compass brakes. Granted, they are a little more, but they fit this frame