It happens to the best of us even if you do everything right.

Since you didn't know about the zink I would assume there may be other steps you missed. My brother wiped a lobe even with the zink additive.

I have gone roller with my motor and my brother has done the same with three of his pontiacs. Seems to have more benifits then cons with the rollers setups. The one big downside is mostly the cost and having to run either a bronze or composite distributor gear.

With any new cam I always make sure to prime the oil pump and verify I have oil out each of the rocker arms.

With flat tappet cams, its recomended to remove the inner springs during break in process.

I'm sure others will chime in. There is a whole lot of info on this subject on the PerformaceYears forum.