Thanks Grav. In this case, I ate the usual meat and salad meals but switched out the meat for fish. Same carbs and protein, less fat and calories. Could have been the reduced calories as much as the fat, or maybe it was just coincidence. I do think you are right about increasing fat in maintenance. Since I am already at minimal carbs, about 10g net per day, I guess the question is if I increase fat should I decrease protein to avoid a significant increase in calories.