I am looking at getting a single axle enclosed trailer. The guy says the axle is bent to where the tires don't wear properly. Hes got it priced way low, and Im a pretty handy guy. Does anybody know of how big a project swapping out the axle could be? Are we talking an hour or two, and afternoon, a whole day, several days? Any help would be appreciated as Im trying to determine if its worth the effort to save a bit of cash.