The first 11-12 hours were run using Joe Gibbs 5w-30 break in oil then change out to the 20w-50. The oil pressures with both oils read the same. Re: the camshaft. It is a flat tappet with a "mild" profile with the overlaps specifically designed to prevent reversion. The whole intent of the rebuild was to provide a 15-20% boost in HP and torque at a 3000-3200 rpm cruise. Not interested in what it does at 4400 rpm. The cam specs were written by Jim Reid based n his extensive marine engine experience and the specs were reviewed by 2 engineers at Com cam and they agreed with Jim Reid's specs. Looking forward to having the other motor done and changing the props next spring.