MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
I set valves with a compression gauge, cranking on the starter tighten until compression drops off, loosen until rockers rattle, split the difference, puts me DEAD CENTER of the adjustment range of the nut every time, and I get to watch the actual effect on each cylinder as I go.