I used the covid lockdown time to tackle the Mikuni MR50 member geezer101 messaged me a lot of advice...
Oh my bad, the white paint is needed mostly on the crankshaft pully TDC mark which was really hard for me to find as well as see ~ it looks like the factory made an indent on both sides of the pully belt rim like a hit with a chisle mark
Be suspect of anything made of 35 year old rubber (tubing ends hose ends vacuum diaphragms brake lines carburetor parts CRACK CITY
I bet your truck will run just fine after all the love it's getting now (lucky truck)
Aloha Bro