Were they all different Harvey's or were they Stagecoach strikes? Harvey's is one of the few that has some heavier ones. Try weighing any Harrah's, Edgewater, Fitzgeralds, Golden Nugget, Stardust, Riverside, Silver Club, Reno Hilton, Colorado Mining generics, they are going to be in the .656 range. Flamingo Hilton has a few heavier ones, and I know the Cal has (Cals are very inconsistent).

Dave.