Roller Rocker geometry questions

Skrews - I did review that diagram and there are two things I don;t like about it... It doesnt show a rocker shaft centerline, which for the purposes of my opinion is crutial; and it doesn't make note of the relationship between the two different angles of the valve centerline and the centerline of the rocker shaft stand. Because those two angles are tipped towards each other, simply shimming the rocker shaft up will not solve this issue. I'll simply say we disagree as there are many instances of builders disagreeing on setting geometry - even on relatively simple setups like Mopar where there is only two variables that contribute: stem height and rocker shaft centerline.
Stumper - This is a problem created by poor machining and it can be simply and permanently fixed at this point. It's not exotic. It's simple quality control as the engine builder.
Raymond - Ii is part of any valve job to cut the stems down. It's also very common for shops that do more GM-type stud rockers to screw things up. The shims available are made from .010-.050 thick IIRC. Trimming what is needed off those would be nothing crazy and take a shop a couple hours at most.
71Swing - I would question validity of your story. not the intention of any party - but the details and reasons. Time tends to cloud the mind and you're referring to second or third person memories of years ago. The RPMs were designed dimensionally for factory rocker hardware. All aftermarket rockers have minute differences that will affect the swipe pattern, but all are basically the same at mid lift in terms of where the contact is when the rocker and valve should be at 90° to each other. I've been an RPM user since they became available in the late 90s. No set was ever installed out of the box because the first set's valve job was so bad that when the shop showed me I refused to run them that way. Rockers used included Isky iron, Crane iron and roller, stock stamped, Comp steel roller, and some Chinese set. The only issues found have been spring clearance on occasion and that Chinese crap was horrid all around. Attached is the last set that uses Isky's iron. A roller tip will have a narrower pattern and it's less important to have the pattern centered. But - any deviation from center is three things: lost lift, more sideloading of the valve on the guide (frictional power loss and wear), and a lower rpm threshhold for loss of valve control (harmonics and "float". It will certainly work as you have it. But as you are still in the assembly phase, the fix can be done reasonably easilly.