So, just to share something I learned (may be common knowledge, may not) I re-used the same pads with this new rotor. Upon first test I noticed the front brake was very weak! I took pads off, scuffed them with 100 grit sandpaper, cut a groove in the middle to reduce squeaking ( learned this on last build) wow what a difference! Took it through quite a few turns today, and it feels great