How do you stop the calliper twisting out of alignment when you tighten the bolt down? Got some Hope tech2’s and I can’t keep them straight on the the disk!

Is it a long bolt hitting the back of the mount? Use a shorter bolt.

Hold the brake on. Then tighten bolts. Do this a ‘nip’ at a time and alternating between the two. That is, don’t fully tighten one bolt then do the next.