it could just be a isolated incident? its the VF-1S hikaru which was the 1st 1/100 valk released. perhaps they fixed the latter releases, but i don't know since i didn't bother picking up ther others after handling the 1S hikaru.
don't get me worng, it still holds together, it doesn't fall apart with the slightest breeze or anything, its just that most of the pegs inserts are cracked/split with very minimal handling on my part.