Hi, I bought an AW soprano sax along with Kessler soprano MP (hard rubber). I heard Antigua winds original MP is copy of YAMAHA 4C and can be frustrating. But I find that the original one is easier to blow and in tune than the Kessler one, which is a professional mouthpiece. I never played soprano before so I cannot tell what is going on. I am thinking to return the Kessler one since it is harder to blow. Should I return it or keep it in future when I improve? Is it because of my level that I cannot control Kessler MP? The kessler MP is in tip 5.