| Your chrome stains
These are probably caused by waterspots after washing. They should come off with your normal waxing. Then be sure to dry the chrome when you're done washing, chamois should do.
The toothpaste sounds SCARY to me. It would be quite abrasive and may cause scratches.
2003 MCS DS/W, Lapis Blue, Roof, Winter, DCS, 17's, many grins. | 
