Thanks. I found it after posting my question, of course. In the current version of Cura, what some people refer to as "Air Gap" is now "Support Z Distance" with separate settings for Top Distance and Bottom Distance. Like many, I struggle to remove supports, especially when using PLA+, and am always looking for ideas. My last struggle was to get a mere 2mm worth of supports off the bottom of a delicate piece, about 4 inches by 3 inches with several small sections that wanted to come off with the supports; the supports were too small to grab hold of with pliars even, and I had to use a sharp scraper - I was afraid I was going to slice myself open in the process, it was very difficult to get them off without destroying the piece. One person's idea was to increase the air gap/support top distance to .4 or .6, to ease in support removal after printing, thus my search.