Thank you for the tips. Using what you guys said to try I was able to fix one of the windows in my screenshot, but not the worst two. After an hour and a half of tweaking geometry, I could only get partway on either of the other two windows.
At this point the time investment required for this model isn’t worth it, so I will find another model or work a different storyline.
Thanks for taking the time to help me! I did learn some useful techniques so it’s been a worthwhile effort.
Cheers!