May I suggest that you keep in mind that we are trying to help you- being short & demeaning with the hand that feeds you (hats off to Swoop 223 for taking his time & talents in trying to help you) isn't the best way to get the help you require.

The proper Impco fuel system for your application would be the VFF-30 vacuum lock off, Model J or Cobra regulator/vaporizer & CA100 carburator/mixer.

Perhaps if you explained yourself more clearly our answers would be more on target. Your symptoms can be caused by a few different issues, proper diagnoses & comunication can get us to resolve this, if we work together.

Have you concidered the ignition system- have you checked for spark when the unit is begining to die? As mentioned- have you checked for a clogged fuel filter at the bulkhead fitting? Have you checked the connector at the fuel tank? And lastly, have you tried using different propane tanks? These should be the basic tests being done before diving into the fuel system components.

And for the record, I personally have never seen a pnuematic governor exhibit the symptoms you have.