Fedex just deliverd my M3's. I'm still hooking them up. One speaker was missing the red and black caps that snap into the openings on the speaker connectors. Also when I looked into one speaker I saw lots of poly fill but the other speaker has no poly that I can see and all I see is a white wire hanging there.
I just decided to take a flashlight to the port hole (couldn't see anything otherwise) and one M3 has no wire sticking out, you can just see a little bit of poly. The other speaker has a blue wire sticking out into the opening, into the port hole and it is covered in poly. As long as it is not touching the drivers I don't think there will be a problem.