Lash cap help needed

mderoy340 said
My roller rockers are Hughes.

First check I do is with valve on the seat, checker spring installed, and no pushrod installed. Mark valve tip with a sharpie and slide the rocker side to side, this will give you the initial roller contact point.
Second check is pushrod installed, (if using hyd lifter use a test lifter with washers installed set to the preload you are going to run) go to mid lift point and slide side to side.
Third check is at full lift point.

If the 3 marks are an acceptable wipe pattern install full valve springs and recheck pattern rolling the engine.

Apologies, the O/P's head(s) (from one pic) are worn out 2-3x rebuilt aluminum units.

Lets , Hypothetically, infer some horizontal center lines here.
1) Crank to Cam.
2)Equal Cam Base circle to equal pushrod length.
3)Equal Cam to rocker SHAFT .
4) Combustion chamber (valve stem to placement).
Then however, Gents, we must consider the 'Y' ANGLES !!! most important
is Rear to Front alignment ... Apologies I wax philosophic...

rapom65,
Don't over think this, save up Your $$$ .