Catlike Helmet retention not small enough
My girlfriend has picked up a catlike vacuum helmet in a size small (51-54) which fits pretty good apart from the retention system. It seems like it won't ratchet up enough slack to make the helmet completely secure. The helmet otherwise fits good, she certainly couldn't go a size down even if there was a smaller size available. Is there any way of shortening the retention system or even buying a slightly smaller diameter retention aftermarket?