Originally Posted by
sillygolem
A stack of 1mm spacers will work fine. Washers will work, but the metal isn't as strong so they'll emboss themselves to fit anything they're against: This makes them a PITA to remove when you need to regrease the hub.
What were you using? I've never had a problem with plain zinc plated steel washers found at any hardware store. I think they charge $0.25 per pound at the local Farm and Fleet.