I have a rear derailleur (RD-7800) that has a couple bad pieces and I'm trying to find out if there's somewhere I can buy them. If you look at the link below, I need to buy item 1 (Y-5v5 98010). There are several pieces in that part number on the diagram. The two just inside the u-clip are damaged. Is there somewhere I can buy that part number? I tried Performance Bikes and had no luck.