Fantastic! This tells us you are working on the ideal mechanics right now. That said, in order to change old form and ingrain new form, you must carry out your form work at a very easy, slow pace. It also needs to be conscious process. Running to music can void this conscious process (since that is the point of music, to tune out). So if you are going to use music, you must really concentrate on your turnover rate/mechanics if you want to actually ingrain it. Great work focusing on running technique!