I can't believe I've never had to buy any. Now that I've gone through the pounds of them I've collected since I first started stripping mowers, I'm at a loss as to where to acquire them in bulk. I've been on EBay, Amazon, Jack's Mowers, and Tulsa Engine Warehouse. Even my beloved Ace Hardware didn't have any that had a big enough inside diameter. If they did, they'd be .45 a piece anyway. That's not happening. I'd rather not keep shaving the wheels to accommodate thicker washers. Any ideas oh wise and benevolent Oil Guy Crew?