Rickochet I've been surfing feabay for an adjustable 12 like the M1 , 2 . They are still pretty dear $$$. A new m2 12 sr flex shaft complete club went for $146 + shipping which is best price I've seen this week . I'm following a m2 head now but its' bids are already at $76 with 2 days to go, so it'll be too dear soon. It's ok, just got that darn itch again and little scratch to match.
Courious more about your 919 distance /accuracy, feel, thoughts, experience vs your m2 & specifics, if I'm not being too nosey. I'll try to extrapolate how my old Ping G15 reshafted with Mitsubishi Rayon Bassara E 55 5ct compares and how my Miyasaki C Kua 39R shaft might be a good fit the M2 12 . I'm wanting some higher trajectory so could adjust the m2 to 13 or more. Etc etc.
Off topic, sorry, but it's still about optimization of driver selection.