I've converted them to full time oiling as well as oiling up through a ball and ball pushrod like other makes do. You can block off the timed feeds from the cam if you use these methods and you don't have to mill the stud either.
Same, full time oiling with a .063 restrictor. I could have gone smaller too, tons of oil to the heads.
I
also machined new 1/8 holes in the cam bearings at the old 12 o'clock position. Flipped them 180deg at install, that blocked the old feed holes for the heads and restricted oiling to the cam.
