They made it sound like it’s okay to leave crown with an open end, not in my house lol
My boss’s miter saw has very short verticals supports so we cut it flat and cope with a coping saw and I use my utility knife for clean up and fit adjustments. I set up one saw for the 45 degree corners and one for 90 degree cuts. Once my 45 degree saw is dialed in I don’t touch the adjustments. I flip or spin my crown based on the specific cut I need.