Reworking the 273 Adjustable Rockers

(1) Should I drill a hole in the shaft on the valve side? (2) if so should I clock it with the valve closed? top rocker hole is closed and side rocker access hole that Ma drilled is closed with a setscrew. (3) Should I drill a hole in the shaft (in the pushrod/adjuster side)? (4) if so how should I clock it? I will checkout the trans dipstick tube as I have extras. I kinda figured the plumbing pipes was overkill! but it was the only idea I could come up with at the time. RR PS I will when I have time read back on your posts as you may have already answered my Q's. Thanks bro.

(1&2&3) Until I get my pump and pan on, fill it with oil, spin the pump with a drill while turning the crankshaft, i won't know if i will plug and drill new holes. I want to see what the 2 rows of holes with the banana groves on the bottom are going to do with the rocker arms plugged and drill like a W2 arm.
(4) If I see a problem i will probably go with what yellow rose said he did.

Check out this link on the pickup tube
Small Block Oil Pick Up Tube Question