Reworking the 273 Adjustable Rockers

OK what I have is a circle track 360 coming together. extensive oiling mods (Sanborn/Guitar Jones). hi vol pump. FT head oiling with .080" orifice setscrews in the decks (not assembled so I can go up or down on them). So far on the 273 rockers: capped top hole/drilled hole on valve side (per drill bit pic) to .100" & will up that to 1/8". the shafts are on the bench but I would & do install em with notch down and to the rear on pass side and down and to the front on dr side. the shafts I have have the bottom hole with banana grooves and the side hole 63 deg away from that bottom hole (I forgot to note today which side). I will plug the current holes with shot. (1) How should I finish this out? drill the hole under the valve tip from .100 out to 1/8 and and what clocking do I drill it further into the shaft? Valve closed? Just this (1) hole on the valve tip side? I do have other shafts & some do not have the banana groove on bottom just the slightly offset hole on the bottom and NO side hole. I await further instructions! RR PS now to throw a "monkey" wrench into the works! solid MP cam and hyd lifters which I took apart & added a spacer so the cup is higher and just under the snap ring so that I can use my current cup/ball pushrods! not sure if they are 273 ones or not but they are close enough to be dead on correct length for my mockup checks (1) thread showing (I wanted a bit more) & the cup is a bit close to the rocker at full lift but does clear OK. everyone tells me it will grenade on test and tune night! All I did was convert hyd lifters to soild so I could get the cup height I wanted so as to not have to purchase new pushrods. I feel lucky