383 engine noise question

So after the winter working on the lifters, fuel pump and master cylinder I went for a test ride today. Although the loud tapping is gone and not at the fuel pump anymore the noise is still there >or = to 2000rpm. Only in the front part of the passenger side head. Noise decreases as you move away from the front part of the head toward the back of the head with a rod touching the head at the valve cover. Lifters have all been changed but when the engine rebuilder did the engine he used the original rockers after checking them. I'm wondering since they are the original rockers if one has worn in the past 10,000 miles causing the noise. Maybe new lifters took up some slack since the ones installed at the rebuild had gotten noisy? Cam lobes should be good since all the removed lifters looked normal where they ride on the cam. Rockers? Rocker shaft? Pushrod?

Just pulled the rockers. Push rod ends look ok and when I had them out changing lifters I rolled them. Second rocker from right, front cylinder, doesn't have full contact with shaft on bottom of rocker like others?