Norman, I’m having the EXACT same issue, looks good in preview window, but crushed blacks and even slitly elevated crushed whites.
Iv’e gone over your post word per word, and even looked at every pull down on the top, looked at every FX available, and really have to say that I couldn’t find one single thing you mentioned in your instructions. No computer to studio effect in FX at all. No “levels output effect” to enable or disable, it’s almost as though we were speaking of two different programs. Feel free to maybe correct some verbiage or show me how dense I am that I can’t find any of the mentioned adjustments.