You have something wrong. There is now way the cam should look like that. It's not the cam or lifters at fault when this happens.
You need to get a handle on it before you get a new cam or you'll do it again.
FWIW I don't use zinc additives for break in. I use a dedicated break in oil. There is more to it than zinc.
Call Jim at Racer Brown BEFORE you buy anything. There is much better stuff than the comp you are looking at.