Well, after a couple of weeks, my thumb is much better. Though on cold rides it tends to ache, but that may be a temporary thing. I had to tilt up my brake levers a bit so I don’t have to reach back to shift; glad you can adjust the paddle angle. I was squeezing a bottle today and felt some pain. That may go away or not. But it tells me if I changed over to twist shifters, I would have been just as bad or worse off.