Purney,
Welcome back, new name and all. You have it all figured out on the valve lash thing. You are certain the engine has hydraulic lifters, right!
My comments might start the usual name calling and telling of massive war stories, but I like to adjust the lifter with the engine warm and running.
Many folks don't feel this is the most accurate way to adjust the lifters. Hydraulic lifters, unlike mechanical lifters have a operating 'band' so to speak...they don't have to be within thousandths of an inch to work properly.
With the engine warm and running, you can back each adjuster off until you hear it click, then bring it down until it doesn't click. This is zero lash!
While still on that rocker arm, bring it down the half turn in two quarter turn increments, slowly. The engine should shudder and shake a bit, then will snap out of it and purrr!
OR..do it the other way, which is fine too. Good luck and welcome back.
Stuart
