Since it only happens on three of the lifters and only on one side of the block it might be the block is cast a little off. But since another guy using the exact same Crane set up had oil pressure problems I think Crane is making the base circle too big and not aware of the problem. I am going to keep the lifters and get a custom ground cam with a slightly smaller base circle to pull the lifters down slightly. I believe that will fix the problem.