This is one i've never heard of!! I have Shimano's from the 1980"s and up. TX, AX, Symetre, SideStabs,syncopaths and on. And like you I go into beaver ponds and other hard to reach places here in Vermont, and originally in NY and no wear on the bails or the wires.
Can I ask what type of line you use?? I've talked to several folks in the past who had problems due to using Braided line, spider wire etc.
Go on ebay and type in shimano bail, reel name and model. Being an older reel you may find a part for cheap or a beater reel of the same kind for parts but on these ask for a picture.