I've read much about problems with heavily worn Kent or Piper camshafts after a few thousand miles. I think main problem is that they use very, very, very old and poor machines. I've read the Kent fitting instructions and they're horrible. Even in a CVH nowadays a new camshaft should be good enough to be fitted without cam lube and without running them in for such a long time. CVH camshaft wear is worse than in other engines, but even cheap standard ones last for many 10.000 miles! I'd recommend Schrick cams, but they only make one profile for a N/A CVH.