While mocking-up the valve train assembly, I observed the Harland rocker arm to have only one oil hole and that hole is on the end facing the pushrod. While the stock adj. rocker arm has two holes, one feeding the pushrod and the other lubricating and cooling the the valve stem/spring arrangement. For you folks also running Harland rockers, do your rockers also have only one oil hole. Please advise, thanks-Oliver
