My erector didn't add the framing for the windows when the building was built. The windows didn't even show up till one of the last days. Since I'm framing the interior, i went ahead and installed them this weekend. Lots of drilling-
That's when I noticed the windows weren't installed level, so I had to pull my windows and recut the sheeting and re-install everything. They are now sealed very well and installed properly.
The erector also never installed the foam closures at the base of the wall panels, so I've been installing them too. It's making a big difference in the amount of creepy crawling things I see in there at night. I had the concrete ledge, but for some reason the erectors just didn't put the closures in, and I didn't even notice.