I think that clears it up. Thanks for your help!Let me see if I can clear this up for you. The portion of the pushrod you think might be bent is actually the end of the valve adjuster that is part of the rocker arm.
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The collar at the top of the pushrod is a cup. The end of the valve adjustment stud is rounded to fit the cup. When adjusting the valves you loosen the nut on top and using a screw driver lengthen or shorten how far down the adjuster is positioned.
Hope this helps.