Portable generator tri fuel conversion

[rust in the eye]

Looking for input from those that have made this conversion or have knowledge of specific input pressures needed for both natural gas and LP.
The carbs are readily available but one seller cautions about a specific(?) LP regulator only THEY sell.
My application isn Onan with Honda GX390 clone engine.

 

[aandpdan]

Check out US Carburetion - MotorSnorkel

I've used several of their kits without any issues. Propane is easy, it's 11" water column for pressure on most all regulators. Gas pressure is about 7" water column - but there are variations.

Not sure of what seller you are looking at but there are two regulators, the primary for the gas (line) pressure and the demand regulator.