I never read that when I bought a Luna head for my 55cm Obitsu male
All I did was use a hair dryer to hep get it on his head, as per standard vinyl operating procedure
2 Luna heads - 50cm female body on left, 55cm male body on right.
The neck appears slightly too large for the neck (there's a small gap on each side near the back, not really visible and the right wig would hide it completely), and he has less sideways or forward head tilting than on the 50cm body (which doesn't seem to have much, either - so I might just suck at putting heads on or posing them
). The head turns left and right and tilts back the same though
Remember, the reverse of stressed is desserts.
Growing older is mandatory. Growing up is optional.