Can't speak to the 3000, but it was well worth the effort on our 2000.
Runs cleaner, less exhaust smell and temp, no gas to tote, and can still run on gasoline if needed. Been averaging about 20hrs on an 11lb tank.
The mixture is more sensitive to altitude but is easily adjusted. It wasn't a difficult conversion, but does take some time getting used to the terminolgy.
US Carb has had a bit of a CS problem with some folks, I had no problems.
EU3000i US Carburetion Propane Conversion NOT Recommended