I am guilty of "delayed maintenance".
I have done NOTHING to my car in 6 years. :-(
Except tires / brakes. And I never let my oil go below "10%"
Did valves, Antifreeze change, and new thermostat today.
ALL my ex valves were at .013-.014". !!!
ALL my in were .009-.010
Never heard a click or tick that I didn't write off as "loud injector".
Waiting for "3 hours before starting" per Honda book. Not sure needed, but better safe than sorry.
( never abused, never over 5k rpm unless really necessary)
will update if it runs better / different