My brackets were too long by a couple of pubimeters. Bending the curl a little more and adding soft rubber pads to the bottoms solved the problem.
One thing I noticed was how low your bag is hanging. I am going to bet that it will hit your frnder on severe bumps, even if you have aftermarket springs. The stock travel is a little over 5" so measure up from the fender and that is the lowest the bag can be.
Check out this pic and note how high it's riding:
Here's another shot (although older, it was still after I fixed the hitting issue):
