A boys first broken pushrod.... LOL

I have a manual , that agrees with all of you guys, that those shafts have to have the knotch facing down.

Also, those are comp cams push rods, I have an old set of push rods that came with the adjustable rockers and shafts.

They are silver in colour , not black, and are shorter. by eye about a quarter inch. Would it not make sense to set everything up with those, to give more clearance.

The lifters are new , or were new, comp lifters. are the ends of all push rods the same?