Oh, he said ROCKER shafts look upside down. How do I check?

It's a sunny warm day in GA today (65) so I took a crack at it.

I put it TDC#1 compression stroke, and broke the rocker shafts loose, pulled the push rods.

Nearly all the rods on the right (pass side) were bent and all the rods on the left were straight. What would cause that?

How do I check correct rod length before I buy more?