[TheForge] Natural gas burner?

[G. Watts]

  Hey gang, this one's mostly for Mikey, but anyone's welcome to chime in...
I recently scored a unit on ebay that will compress natual gas from the
house line into cylinders at about 275 psi.(item number 7605197382 which I
think is still available for perusal if you search for the  number on ebay).
I've tried it out with a Victor torch with the correct tips and it works
well for cutting.
  I've heard questions asked and answered before relating to natural gas as
a viable gas forge fuel, but never under the premise that the natural gas
would be available under higher pressure.  So...what modifications would you
suggest to switch my propane forge over to natural gas?  Larger fuel
orifice?  BTW - it's a homemade sidearm burner.  And if the conversion or
different burner style is covered in the book, by all means say so and I'll
gladly order it!
Thanks all.
George.