i usually groove the cam and install .060" orifices in the heads. not sure if the victors are the same but iirc you can use a 1/4-20 (or is it 10-32) setscrew in the passage below the rocker stand. i think you can just tap the existing hole with a 1/4-20 tap. i do get a little weird about dissimilar metals and electrolysis but there shouldn't be any moisture there. i know guys do really cut back on the oil to the heads but you'll never catch me doing it. i've seen too much burned up rocker gear over the years.