I recently bought a set of what I thought were new comp cams roller rockers (1.6 ratio) for my sbc 350 that I'm building. When I got them home and opened the package I noticed that the nuts had been obviously cleaned up and won't fit my studs. Can I get nuts that will fit or do I need to scrap these and get a whole new set. Also, what would be the best pushrods for my set up: 5/8 cam, 1.94 vortech heads?