I have an old track bicycle frame that has a splined Campangnolo bottom bracket. The splines on the cups are all gone, stripped off so the insert/removal tool won't fit. This probably happened when the frame was repainted and paint got on the threads making it difficult to adjust so they just stripped it. Any ideas how to remove these cups? My only thought is to weld on large nuts to the face of the cups and put it in a vice and turn the whole frame.