You never really made clear in you post why the switch? I guess what's happening to you is normal; however without knowing the direction you want to go in it's difficult to give you advice. If I could belt out a Double C I'd never leave the mouthpiece I did it on. I used to play on a Bach 3C. I desired a better; richer tone and an all around mouthpiece. For me I found it in the Monette B4S series of mouthpieces. It took some time but I can play with all the range I had on the Bach 3C and I get much better tone. So I'd say define your goal and then strive for it. If you don't your just hap-hazzardly changing mouthpieces.