340 Oil Priming Question First Start

Have you tried setting the crank at the positions noted above in post 21? As said by others, some aftermarket cams are drilled differently but MOST are not. Set the crank at 90 degrees BTDC on number 1 compression, run drill for 2 minutes. Passenger side should oil. Rotate crank to 20 degrees ATDC on number one on spit overlap, run drill for 2 minutes, the driver side should oil. Do this next before taking anything apart.
How do I find 90 degrees BTDC?
Holy crap man, take the entire rocker assemblies off. What's the worry? What is it? 5 bolts each and they're on the work bench. Stop trying to cut corners and find out what's wrong. You have all of us here to help guide you if you get stuck. It's a very simple process and they NEED to come off to check everything. Just removing one or two bolts at this point? Makes no sense. Get to the root of it.
I hear ya Doctor! Did dr. McCoy say Holy Crap Man to Spock?