Just showered... I'm squeaky clean... congrats Kim on finding one little flame on a long arse torch to demonstrate your point. Can you show us how the larger soft flames can be produced with high pressures as well? I know there are glass workers that use a larger soft flame for soft glass. I'd like to see one that isn't a little short thing. My point never was that a soft flame wasn't possible at all with high pressure... My point is that high pressure can adversly effect the ability of a torch to make a soft flame... size matters here. The turbulence in the gas is increased with volume. Make a medium and large sized soft flame with your torch on high pressure.
The bennefits of backing down the regs has a range as well. Not all flames can be made with one setting and that is my point in it's entirety.