Hi there!
Dr. S and Dr. O have had unfortunately some mishaps with sinus areas, it is some nasty business, but I am not in a place to talk poorly about them.
They are both capable surgeons and have done some impressive work, I'd recommend staying away however from anyone that does open sinus work though. The complications risks are high, painful, and then you have yet another surgery to endure that even then may not be corrected.
Please be safe and keep asking all those good questions!