The only reason I went to roller was I didn't want to take it apart again due to a flat tappet cam going, well, flat. I have too many friends who got almost no miles before their flat tappet cam was toast and they did a thorough break in. And yes I did have to take out the Competition Cams lifters and replace them.

I still don't know if I believe Comp's claims that it was the oil that caused the failures, most of the guys I know used break in oil.