It does seem like a waste. The ones on my build are worn as well. But, I didn't want to buy the whole thing to just throw stuff away. Have a ton of parts in this box, including several brands of wing mounts, but not those. I put the worn ones back on. Also needed some spacers for the rear hub. They don't sell them seperately either. Have to buy the hubs. Nothing wrong with the ones I have. Or the 4 other ones in the parts box. Luckily one was still mounted to the A arm. I robbed those. But, if it breaks there, and these go flying, I either have to buy new hubs I don't need, or resort to washers. SMH.