Why my SBP 14" Mopar Rallye won't fit the front of '65 Valiant?

I took an exacto type knife and scraped the hub like crazy which seems to have had a rock-hard film of "petrified" grease or something, until finally the rallye wheel would slide all the way on. What freaked me out was how the original factory 14" steel wheel would slide right on and off while the 14" rallye would hang up. Maybe the manufacturing tolerances on the rallye's are tighter.