[dtw]

Fiddling with wrist pin clips is the biggest PITA to me, and usually results in puncture wounds, bleeding, swearing, and reaching for the extra clips I ordered.

Cleaning the grooves in the rocker shafts...all 24 of them...is mind-numbing.

Scrubbing & polishing the through-bolt bores and all of the other bosses & bores in the case of plaque and hardened sealant from the last build takes hours and uses up lots of handgun & rifle cleaning supplies.

Cleaning mating surfaces - nope, I discovered Roloc discs - life is good on this task now.

Re-seating the timing chains when they fall off the intermediate shaft sprockets before you have installed the cam sprockets - infuriating.

Fishing a Woodrfuff key out of the sealed block after it disappeared down the timing chain openings - without tearing the block apart again - brink of insanity (but I got it out after 3 days of fiddling!)