Yes Mike built my bike back in 2010. I've ran it quite hard for many years, so I in no way blame Mike for anything. Mike did right by me for the time involved, effort and communication when he had my engine. I was just curious if the holes drilled in the crank are a HRD 'Rx'. I should soon know if a stock crank fully built Quadzilla runs smoother then mine over 4k or it it feels the same.