How would opening the backs of these decrease the mids? If anything, it would greatly increase them unless you planned on using additional dampening materials. That 1.69 K spike is the main reason why I am holding back on buying these. Additionally, I have a great set of open backs and wanted a nice planar closed back...so modding to open is not something I would plan on doing. Also, has there been any consensus on pad rolling with the M1060C?