I was thinking about my progress with the Coda EDC and the problems David has been having. For me I had to treat the Coda like a totally new instrument after my initial First few days of exposure to it because after I started switching chambers and playing the full chromatic scale there was plenty of changes that I needed to train my brain on. Like the difference between the English pendant ocarina and the 12 hole sweet potato ocarina or the recorder. If you rely on muscles memory to get you through. It will slow your progress down or even stop it cold. So if you just go ahead and treat it like a totally new instrument at the start. You will make faster progress in the long run I think.