Starting to work through this ST-1JR build with my son, and I notice the scale length on the web site does not match the neck I received. I spent some time panicking that the nut was incorrectly installed. Then I calmed down and ran the numbers on an online scale length calculator and realized that the neck is properly set up for a 576mm scale length, not the 572mm scale length listed on the web site.
Unless I got a one off, I recommend updating the web site with 576mm to save others from panicking too.