garyt1957 I had one for a very short time, shorter than normal even for me. The problem I had was with my +AoA I was catching the sliding weight on the ground, as it stuck out from the sole. (not flush with it) I noticed later on another M5 and the sliding weight was different, more flush to the sole, so maybe they had 2 versions. But I never revisited that head. And I did read of many cracked heads of that model. Very many. Perhaps the weight dragging was the problem and was why it was corrected mid year. (??) Maybe @Typhoon can elaborate, but that was before he was involved with the company, iirc.
