10/15 yards longer

This is definitely possible....my setting for both my driver and 3w is C3. The upright setting is better for me given my height 6'3" (and swing)

Dialing in your driver by adjusting the settings can really help with your ball flight, shot shape and distance. It's why the majority of club manufacturers have gone the route of adjustability.

Absolutely possible. You've added loft and increased the ability to square the club face by making the club more upright. Isn't technology great ;)

Hey! I have a 816 19 degree hybrid and I moved mine to B4 from A1 and have noticed 12 yards more distance down the range tonight. I was using flight scope and was surprised in how different my Ball flight was... Looking forward to hitting the Course tomorrow? What have u gained in distance ? Did u see a difference in ball flight ?