MAC tools makes a set of "quick sticks" : TDC ,adjustments per cylinder are laid out ( lays in the head , a notch is provided for each push rod ) turn over 180 deg., finish. I/E plus cylinder are marked . Mine are very old, 20 + years. Stole from Dad, he knows where they are . Like I said ,oversights happen ( #$%@) If you walk away without a hit to your wallet, no big deal.