The issue with 4408 wasn't the frame - those problems have seem to have been largely resolved.
One of the trucks was not assembled correctly underneath the car, which lead to it being located a couple of inches off of where it should have been. Rather than disassemble it and reassemble it properly, Bombardier's first answer was to "rivet it into the proper place - it'll only take us a couple of hours", to which the TTC gave an unequivocal no.
I guess the folks at Bombardier did a couple of midnight shifts to get the car completed correctly. As of 2 weeks ago it was looking like 4409 would be the next out of the factory.
Dan
Toronto, Ont.