I am working on a Chicago Coin Turf Club and the coil for the Game Over Relay is toast. The coil is an L28-500 which is a 6.2 ohm coil, obviously 28 gauge wire, 500 turns. When I tried to order a replacement, the great folks at PBR advised me that an L28-500 is rarer than hen's teeth (my words not theirs), and suggested that I try rewinding the bobbin, if it's salvageable. I removed the old wire from the coil, ready to embark upon my first bobbin-winding, but I'm questioning whether this is usable. I am hoping that some of you with more experience than me can advise me as to whether you think this bobbin is salvageable. I think it looks pretty bad, but this is one of those relay coils where a screw goes into the core, so I really want to be wrong about that since I'm not sure what I should do if the bobbin is hopeless. I'd be most grateful for any suggestions!