I've had a few B3s and got a few guys at our club on them aswell. The service is outstanding. Tell them what you want and you'll get as a previous post said, photos of clefts, prompt answers to any questions, etc.
I've had 3 and 2 stripe B3s and by far the best I have is a 2 stripe which has been my match bat for 6 years now. Its not a looker but pings better than any I've had. It's got 5 grains, is heavier than I thought I wanted (2.11 I always previously only went 2.
and the middle is higher than I thought I needed. I picked it up off the rack and it just felt right. There's no substitute for doing that.
If you can't get there, as you say, speak with them about what you use. It may be that the Root shape doesn't suit you. I've picked up some of their Root bats at different weights and found them all to be quite bottom heavy so I'd definitely recommend discussing with them your current fav bat and where it's middle is. They'll recommend an appropriate shape...