Floor replacement - c-channel bolt holes slipped 1in off frame holes
We're in the middle of removing our rotted floors in our 1984 Excella Airstream, and we've gotten to the section at the front, curbside door, and when I removed the piece of flooring under the door, the whole c-channel seemed to slip out away from the frame about an inch.
I've seen many pictures of people replacing their floors all at once instead of a section at a time, but I wasn't expecting this.
First, is this safe? Is my shell going to come crashing down on me if I try to take out more floor?
Second, how do I go about getting new floors in and getting this lined back up? I've seen people jack up the frame, and I'm assuming that's what I'll need to do next. Maybe after I relieve some of the pressure the sides and c-channel it'll pull back in?