In Reply to: Zane's Jig posted by Kimberly on March 31, 2019 at 23:19:39:
It was done for decades without it. If one really understands how the system works, the Ford manuals are perfectly good at adjusting. The 'jig" makes it easier for those without that understanding. The 'jig' really amounts to nothing more than a carpenters square & a ruler, not to take anything away from Zane, but just the facts.