Re: Hello, I'm a newbie soprano player
I don't know what kind of mouthpiece ships with the Band Now sopranos, but sopranos all around are much less forgiving than tenor when it comes to pad leaks, mouthpiece selection, intonation, etc.
I played alto exclusively for over 20 years before getting into soprano and it took me several months to get a good feel for sop. Due to the significantly different embouchre, I would imagine someone used to tenor would have an even harder time.
Get a leak light (use rope lighting) and check your horn for pad leaks. Chances are it's not sealing perfect from top to bottom and like I said, soprano is very unforgiving.
I've found that softer reeds on soprano tend to run sharper. It may take a while to find a set up that gets you where you want to be.
Be patient, and Good Luck!