As I managed to mess up the cluster of my present car - bought foil from pixelfix.net. There was no call for removing the needles, but I still got to a point of no return... - I bought a second hand cluster. It took some coding and, of course, the mileage could not be corrected, since that of the second hand one was higher.
Unless the M-cluster is special, an exchange could be the easier and cheaper way. (I saw in Ola's link, that only pixel-fix is being offered and to a fairly proud price.)