Hi guys

An oxycon named Hannah has moved in with me, and today I hooked it in to my Minor. Hannah is much younger and fresher than the antique oxycon I've been using and I found that I could turn up the flame quite a lot if I wanted to and still keep it neutral.
Will turning up the flame harm the torch? It was hissing quite a bit when I turned it up, but I guess that's to be expected when there's more oxygen coming through. I'd like to melt a bit of boro you see, and with the "normal" size flame that doesn't hiss too much it takes ages and a half. With the flame turned up it melted quite well