Hi, i've brought a
7621 neck off E*** and i trial fitted it to a 7321 body i'm refinishing for somone (the necks not going on that body, just wanted to see what it looked like

) and the neck pocket on the 7321 is about 2mm too small. i measured the neck heel and it's 66mm. is this common for necks and pocket sizes to vary? i understand the 7321 is korean and 7621 is japanese so maybe this is the reason? I'm gettind a body custom made for the neck anyway so it shouldn't be a problem, i'm just curious.