Heylo.. Might be easiest for you just to call.. I'm not clear what's happening here. The connection leaks and this ruins the regulators somehow?
As Tony said, they are usually used to pre-heat grills and not that many sold but I would think I'd have heard something. We do have scores of them in use.
But mine here in Indonesia has a completely different fitting.. Maybe send photos too.. We'll get ya sorted out.