ASP Pulley Problem

[punxva]

ok after much searching and busting me ass, i can't figure this out. when trying to install my pulley, it goes on almost all the way, then is off by like 4mm from lining up with the others, i don't have an impact, so i'm not sure if it'll go on any further that way, but there is an oval like washer thats on the crank, near the housing, which to me might be why its not going in all the, way, anyone else have any insight to this, here's the best picture i could take showing what i'm talking about... i've got it circled...