metal

My Yamaha service says that the auto cleaning chemicals cause this, but the auto washing service told me that the reason is limewater or the rain. I don't know how it happened, but it made me upset. Do you know how to fix this? Any chemical or something else? Thank you. Here are the pics:

well today I collected my new mt09 and loved the ride home after a year without a bike was heven. decided to buy last week and fit today an r & g radgaurd. I have one question and that is where does the little plastic spacer fit ? do I remove the metal spacer and insert the plastic one in its...