I'm building a 512 for a customer and i installed a tci rattle balancer that the customer provided, the bolts that hold the balancer together are hitting the stock timing cover where is slightly bulges outward. Has anyone had this problem? I'm thinking to just tell him to return this one and get a summit sfi one. I noticed that the summit one was slightly smaller in diameter vs. all the others. Any ideas? Am i missing a spacer?