I’m currently playing a size 7 (.070) size mouthpiece on soprano. I have never played soprano before a few months ago, except for a single play-test in college. I’m going to try a size 6 (.065) because sometimes I think the 7 is a little too open for me. I play a .095 on tenor and 0.75 on alto, although I’m mainly a tenor player. Or maybe just try a softer reed? I’m using a 2.5 Rigotti right now.