Spring/Keeper interference with Rocker

Also ordered some manifold gaskets - this doesn't look happy;

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Wires will be here Wednesday. I'm going to try and repair this one in the time being in order to do this test; Again, however, all of the lifters are primed and pumped right up. I am unable to push back on the push rods at all right now; what would I be looking for differently while running?

I do have a stethoscope also; I haven't used it while the valve cover is off though.

Rocker noise from wear, basically any play, side or whatnot.
That gasket leak is definitely going to make noise. Good move. What made you put that off till last?