I keep breaking the allen bolts that hold in my Warn standard locking hubs (10-bolt axle). They are fine in service, but when I remove them, they will just break off and that's just with screwdriver torque. It almost seems like some kind of galvanic corrosion is going on between the inner part of the hub and the bolts. What are these bolts even made of? I have replaced two of them with stainless steel ones which are holding up fine so far. Unless anybody has any better suggestions, I will just get 10 more stainless steel bolts.