Let me defend my friend here.
1st, Rob wasn't telling him to advance the cam eight degrees. He was saying that if a cam with 110 degree LSA was ground 4 degrees advanced and that if when installed at 106 that you considered that to be straight up and then you advanced that cam 4 degrees, you could possibily now have the cam eight degrees advanced.
Again, he wasn't saying do it, only that it could be that much advanced under those circumstances. Anyhow, that was my interpretation of his post.