340 issue after camshaft change

Always works for me. One finger to get zero lash and the little spring in the lifter will provide enough drag to stop the pushrod from turning.
Hope I'm not over stepping here. I am not a engine rebuilder, but have installed cams before. I do not want to repeat what was already stated. I do hope cam lube was applied to the lobs while install, do to all the dry runs, before proper cam break-in. Never had this issue, but I would think a Dial gauge reading at the rocker arms would let you know if the cam was in defect, before taking down the install again. Just saying!!!