Thanks Sonic ...for the comment, and timely advice for Casey.
I was about to start posting my answer but you beat me to it.
Yes, I think the JM-1's have been in production for yonks so it's odd that scale length would be an issue.
Casey (hey great name) I've altered the headstock logo slightly since that shot.
Now that this guitar has evolved through several iterations, I feel 'jazzmaster' no longer fits the description.
cheers, Mark.
P.S. I was working on a demo for this guitar until I realised I have already done one