Awhile back I bought some cams and gears from Alem Zuna aka gtz300tt in hopes to do an obd conversion on my z. I took a quick look when they arrived and threw them on the shelf. That was in the fall, and the following summer I pulled them out and noticed a great deal of scoring and some gashes on the cam lobes. Hit him up in hopes of a resolution and he basically said I should have inspected them more closely when I received them, but it's been too long to resolve it. I guess there's just a reasonable amount of time the layman expects to be held responsible for following through with their word.