Wow 180,sound like your down to your last nerve.I haven't seen this mentioned but you said you changed the MC.Did you make sure the pushrod is just touching the mc bore.Different brands of mc's could have a different bore length. If you checked it then that's all I got.These xf guys are keeping brake fluid companies in business.My new brakes are getting better,firmer the more I drive it.Do the pads wear in and get harder? Weird.