Cured a grating front disc by freeing off the bobbins with a power drill and brake cleaner, went for a stunning ride in the sun, then replaced the chain guard, cleaned out all the crap from the chain guide and replace the rusted bolts from the brake hose clamps on the chain guard. Finally cleaned up the swingarm and treated all the chainguard to a coat of plastic dressing so it's lovely and black and shiny again.