>>11495092
In most cases, the Valkyrie neck ball was too small for the ML heads. They do sell replacement neck double-ball joint things of various sizes on ebay that you could use to fix this, but I'm a little paranoid about making semi-permanent alterations
So what I use is this, based on a suggestion I got from here or somewhere else years ago, where you slip one of these things over the Valkyrie neck ball joint, snip it off the excess rubber with scissors, they blast it with a hair dryer until it conforms over the ball joint
With some of the heads in the pictures I had to add 3 layers of that shit, going up a size or whatever each time, but most of the time 1 or 2 layers will do.
And there's basically a lifetime supply in this specific pack that I bought. I've made quite a few unmasked Cobra troopers, and I'd love to make more but I've kind of exhausted the Marvel Legends pool, and I've experimented with Star Wars Black Series, but those heads kind of have a shinier quality that doesn't match the Classified style in the same way that a good ML head does.