I saw the head of an LXD75 crack open when it fell over onto soft grass, and got some criticism after saying it looked to me like pot metal, but whatever it's made of, billet aluminum it ain't, and it's considerably less sturdy than the Vixen line which may be cast but is good quality machining.

I think the Chinese mounts have their place but when you find that issues of build quality are begining to annoy you, it is probably time to be thinking about a Losmandy or a Vixen or some other step up.

regards
Greg N