I did my brackets this week. I used a sawzal to grind the relief in both brackets which was quick. I used a file to make 2 notches to help with the cuts. Most seemed to recomend using one washer under the bracket's bottom when re-installing, but I found using a washer for both upper and lower holes seemed to work better. Make sure you use loctite when re-installing.
After doing the brackets and extensions on my ohlins, my camber appears a little on the negative side (inward) and skis a little toe-in. I still need to take some measurements, but from first glance, it looks like I need to make some minor adjustments.
Mark