residential stair framing mistakes before drywall

Stair framing is one of those residential details that can look close enough until finish work starts. Then the flooring thickness changes, the drywall is on, the trim guy is standing there, and suddenly the first riser or last riser is the one everyone notices. The rough opening is where I have seen the most quiet trouble. Plans may show the stair, but the actual floor build-up, subfloor repair,…