The 15mm socket on my Park 'peanut butter' 14/15/16mm wrench doesn't seem to quite want to engage the crank bolts on a set of early Super Record (1977/78) cranks. It seems like the walls of the socket are just a little too thick - but the lighting wasn't terribly good and I'm not sure that's the issue.
What am I missing here? Do I need a thin-walled socket? Or perhaps a different size wrench?
Thanks in advance.
Steve Freides "12 miles NorthWest of the George Washington Bridge"