Just received my new M775 brakes yesterday, post mount with 160mm IS adaptors.
However, I'm not getting anything like enough clearance on the rear, and I've measured the rear disc at 165mm, along with the several other '160mm' discs I have knocking about.
Do I just shim the caliper off the adaptor to raise it up, or do I need a new adaptor? Or a new 160mm disc?

I've just measured my front 180mm rotor and that's come up 5mm bigger as well. I know that 185mm adaptors exist, so will order one of those, but I've never seen or heard of a 165mm rotor.

Any ideas?