Did which Bigjohn? The screw adjustment? So no power or smoke increase? Damn I guess it is too good to be true. I tried mine really quick, but mine wasn't finger tight like he said, unless he has a GD vice grip finger tightness.
Think I'll still give it a try since it ain't that hard. Maybe I'll get different results.

 

I didn't see any change but oil burners say they did so give it a go no real hazard to try it let me know what happens with yours