I agree with Dave. Contact Brian(or Gary or Bruce) and they'll get you set up. Although, if you went through through the fitting process I'd be surprised if you didn't find a replacement for your current piece(instead of just a companion piece). I think you'll like it too much.
You might be like me(and Brian for that matter) where you can't play many shallow cupped mouthpieces because you put too much chop in the cup.
If you don't want to go the GR route you might want to try narrow mouthpieces that aren't particularly shallow(10 1/2C, etc).