How can ya tell a 1.5 from a 1.6 rocker? Mine are an older set with nothing laser etched on them, and Previous owner thought they are 1.5s.

I guess I should call Harland Sharp, Mine are on the way too them to get a rebuild job.

Their web site shows the 1.5s pushrod oil hole a little bit farther from the adjuster base than the 1.6 but They never say in the reading.

Kasey