If you want to do it the correct way, remove each bolt one at a time (in sequence), clean and oil the threads (most torque values assume clean oiled threads and head seat) and then re-torque to 2/3 of the final value. When you have completed that, then torque to the final value (in sequence).
It seems kinda **** retentive for these engines, but you asked.
Head torque trivia
On the RND Sulzer engines, the "head studs (about 4-1/2" dia.)" go all the way down through the crank bearing caps (approx 22 feet); the nuts are spun on hand tight and then "pinged" with a slugging wrench. All that while under 12 tons of hydraulic jack tension. Six at once.
Fuel injection trivia:
The RND is a two-stroke diesel engine. Every time the injector "pops", there goes ~85 gallons of HFO.
Enough; back to tractors.