The scratches on the tank, without a full respray will have to stay, blame the numpty and his bunch of keys. The Yoke can be repolished, the scratches are in the lacquer applied after manufacture. The rubber is as Frank says a chain guide, just give it an occasional wipe and it will be fine. Anyone who puts their ignition key on a bunch of keys then allows them to swing around whilst riding, scratching stuff etc, should be taken to one side and slapped until they see logic. The ignition switch is mean't to have assorted crap hanging from it, apart from the obvious damage it also weakens the switch and prematurely wears the lock mechanism.