If I remember correctly, the rotor does not float.It is bolted directly to the wheel.I think that the caliper should float a little with the bracket in order to keep it centered with the rotor.Although,i could be wrong about that. I have replaced my rear pads twice and haven't had much trouble.Do you have a service manual? It should be able to guide in the right direction. My computer crashed a couple months ago and I lost everything on it,including my copy of the service manual on it.I have the actual service manual, but it is packed as we are moving.If I run across it today while loading, I will look this up for you.
'14 Ness XC