I got my Juin-Tech GT four piston calipers installed, with my SRAM AXS levers operating them. The GT model is a big improvement over the 2 piston F1 model, with regard to cable pull. I can now use the small hands feature to it's full extent and still have enough brake lever travel. I installed Galfer standard pads to start with and didn't bother trying the Juin Tech pads that came with the calipers. I'll soon have another bike built up and put the F1 model on it, with the same Galfer standard pad, for a better comparison of the two. Hopefully, I'll get a real ride in later this week. The weather hasn't been great lately - either snow, cold or winds.