The M2 is supposed to offer the same "scales" as the L94 Method (10/20/50/100 etc). If it is giving you a '15/30/60, etc then you already have the M1 method.
There is a thread (somewhere in here - about 2-3 years old) about putter scales - I am probably wrong, but I think that it was from StgBilko? Send me a friend request & I'll share a chart.