I've got a 2004 R1150R with system cases that I love! I've got some small scratches from my boot on the cases- any way to polish that out? 2nd- What kind of stuff can I put on the cases to make them look their best and keep them nice. Armor-All type stuff doesn't do well once they get wet. Meguires Back to Black (name?) is made for plastic moulding etc. but seems to get streaky. What's the best schmutz?