Wasn't aware they made the M4 in two different versions.Not true Phat. I know I'm endorsed by Hipshot, but I'm sure if you contact them, they can get you a Schaller with the screw on the bottom. I got one for my JA-R, sent it back & got the right one no problem. They have great customer service.
Seems they would have to extend the plate for a screw on the bottom version (hole) as the normal one's plate doesn't seem to even cover the screw hole area of a screw on the bottom Schaller. Is there a model number for this other version?
Yes, Hipshot's CS is great. Several years ago I ordered a GB7 D-tuner for a Cirrus 6 I was trying out. For whatever reason, the D-tuner's post/shaft was not the same length (1/4" difference
Or Haz