It's been 25+ years since I replaced mine with YearOne repros but don't recall an issue with re-attaching the emblems. I looked at my originals and there are marks inside where a round fasteners left their marks on the fiberboard plus marks where I must have pried them off. By the looks, I'd say they were secured from the back with a flush push nut. Maybe the indentation discussed earlier provided the extra reach of the emblem studs.