c-base chassis issue?

[wolfeman]

As we were picking up this year's KoP, the person
showed us a page describing a possible problem
with the c-base KoP chassis. They said a complete
description of the problem was on-line and you'd have
to ask for a replacement part if you had the problem.
It had something to do with the fit of the corner connectors
into the rails.

I can't find any mention of the "problem" on the FIRST site
or the Andy Mark site... Anyone pay closer attention
than I did and know what we should be looking for?