[olddog]

Picture didn't work for me.

The extra time to clay the intake valve would have been fairly small.

If you mock it up with a light spring on the valves, you can measure clearance with a dial indicator by pushing the valve in until it touches the piston. You repeat at many different crank positions. Then you know when the valve is at its closest point.

I would think that the push rods would bend before a piston rod. If the push rods are all straight, the valve may have been kissing the piston fairly light. Hopefully the connecting rods will be fine. Does the top half of the rod bearings look normal?

I would think a good shop could check the rods for you. I would think at reasonable price.