I was out on Long Island today, taking a trip on the LIRR. Noticed many sets of M7's. Every car that I saw had a metal brace on the ends of the cars by the diaphrams and in the middle of the cars running from the bottom of the car to just under the window sills. Are they having structural problems already? Don't see that on MN's M7's. I know this is the MN forum but perhaps someone out there knows what's going on.