Ok so I have been playing for 15 years and then took a few years off of playing very regularly. I have recently started back playing in my church orchestra and recently stepped up to a King Legend professional level horn. My issue is I have never played a professional level horn and now that I have a new horn with a slightly larger bore I dont have the range I had on my beginner/intermidiate level horn. I know that practice fixes everything however, i can pick my old horn up and have no problem getting high. It is kinda like the new horn is so free blowing that there is no back pressure to help me hit the higher register. I guess my question is other than lots of practice is there anything else I can do? I was thinking about maybe a new mouthpiece to add some back pressure. Any thoughts, ideas, mouthpiece recommendations?