Here is a website for the Bernzomatic torches.
Parts/instruction sheets are downloadable. You can't use the tips
from other style torches generally they will not fit even with a lot
of modification. Presto lite torch sets are about the only one that
most of the items are inter-changeable from the different makers of
the style of torches over the years.
Check out Otto Frei's EZ torch http://tinyurl.com/qs92c It comes with
three tips The catalog also covers just about any torch you would
need and gives about them all.
glen, been there done that