Thanks, all. She’s fine with the action and location it the effort on the front is notably more than the rear. I’ve been using Microshift R10 brifters on one of my bikes for a couple of seasons and they work very well. The triggers are well made, smooth action and solid build. I had thumb shifter mounts on drop bars in an earlier experiment and the effort was also hard, maybe harder. That’s why I suspect the derailleur rather than the shifter. Anyone got a front triple hanging around they don’t need?