I live in Colorado, in a house built in or around 1890 so it's plaster and lath. While working in the attic, my dad slipped and put a big crack in the plaster on the ceiling below and now there's a good sized hole there. There's also a few cracks (unrelated) along the corner of the wall and ceiling. Finding someone who does plaster work in Colorado is hard to come by. The three people I've talked to already, 2 want to treat it like drywall, and the 3rd is retiring and won't take the job. Is there anyone you can recommend or are there questions I can ask, things I can look for, to make sure that the work is done right? We are selling the house, so it needs to be done rather quickly. Thanks in advance.