I had a dented pushrod tube on my Lycoming O-320, so I pulled the valve cover, slid the rocker shaft out of that rocker, and removed the rocker. Then I removed, straightened, and reinstalled the pushrod tube. The problem is that I cannot get the rocker shaft to go back into the bore of the rocker - the rocker (engaged with the pushrod an valve) sits slightly proud of the bore. Is my only recourse to remove the pushrod tube again, extract the cup and the hydraulic adjuster and collapse the adjuster?

Note that I only removed one pushrod, so it isn't like I am attempting to reinstall the wrong length pushrod.