I cut all the cross comb out, and strapped the larger pieces into the bottom half of 3 different frames.
Thankfully, I had a full Layens frame, which I had filled out with 2 large pieces of drawn langstroth comb, cut down to fit, and which was in a swarm box recently occupied. That will go a long way towards guiding the comb building straight.
Plus, they already started building the top area of the 3 partial frames again, and not too badly, so I was able to trim and straighten a lot of that out to match the pieces below.