Hi, yes I gave it enough clearance by doing what you said. First, I swapped out the brake pads for swissstop low profile black prince pads, which is less bulky. I then adjusted the calipers closer to the wheel by squeezing on them and locking them in place; and that looks to have given enough clearance to not rub. Will test this out next week on actual ride!
I may be totally wrong, but this looks like the same sh------ problem I have had with a small QR CDO.1 frame using TRP brakes. When you widen the calipers for more clearance (Zipps and 25 mm Conti 4000’s), the arm actually moves down toward the tire. It seems counter intuitive but to gain clearance above the tire, you have to squeeze the caliper arms closer together to make them arch higher. I was able to do this by replacing the wide “wobble washer” between the pad holder and the caliper arm with a thin stainless steel flat washer. Some people have also suggested grinding down the brake pads (no effect on braking ability - just less mileage on the pads) so you can set the arms closer before contact. I finally decided that they were just too close and went back to 23 mm tires. With the thin washers, they gave a good clearance.