Hey, been playing quite small tipopenings since I started playing sax. Been playing a Berg Larsen 105/2 with a 3ricoroyal reed but last week my teacher who always plays really big tipopenings let me try one his mouthpieces (a Dave Guardala fatboy MBI) the thing is that my intonation sucks with it. I feel like I adapted quickly to the bigger tipopening and I really dig the sound but the whole lower register is like 25cent flat! Have this ever happend to you? Is it just a learning process to get comfortable with that bigger opening? Or what can I do wrong? The Guardala is a 8* and I play a 2,5 reed on it.