While not specifically a 'Y-Block' issue, I have always wondered what was the original purpose for the eccentric cam bolt, that (I assume) was dropped (along with the sliding anchor pin bolt) in '56 (?). I just don't get why a mechanical stop was ever needed to limit how far the primary lining should be from the drum, as the starwheel adjuster does essentially the same thing. Also, since we're on the subject, though I do understand the original function of a sliding anchor pin (to maximize lining-to-drum contact while insuring end clearance until full break-in?), why then I wonder, did Ford suddenly consider that feature obsolete?

6 VOLTS/POS. GRD. NW INDIANA