Hi all, I'm a self-tought trumpeter (I'm over 30). I've been learning to play almost for a year using common methods and good web information. At present time I can reach a solid G over staff but notes over that G sounds forced and weak (I can reach up to E in the third additional line). My range has grown quickly in my first year playing but I've been stuck on G since three months. I play a Bach 7C mouthpiece. I know I've to practica a lot to enhance my range but I want to know if it's time to change my mouthpiece. Any hint?. THANKS A LOT!