I know we\'ve covered this issue, just need a few tips, caliper grinding I did a search and didn't find anything useful. I swear, I've massacred my backing plates and groudn quite a bit on my calipers and my wheels still don't fit. They're 4.125" back spacing which is quite a bit, but still, they should fit with some grinding. Can anyone give me any tips as to how to tell where the wheel is rubbing the caliper/backing plate? I am trying to use black spray paint and put the wheel on when it's still wet and grind the areas that the paint is rubbed off on, but I'm having quite a bit of difficulty. Any tips (or pictures of the completed project) would be greatly appreciated.