I don't know if this is part of detailing but seems like that's the only topic that I can talk about these. Has anyone tried ding king??? It's available in Canadian Tire which I can get. I have about 3-4 dings in my car, one of them is right above a molding. Can it fix that or does it have to be a flat surface???? For 30 bucks CDN is it worth it??? If you used it before does it really work???