180mm rear rotor conversion.

Not sure what i,ve done wrong here but was converting from a 160mm to 180mm rear rotor and the rotor still catches the brake so i,m assuming i,ve got the incorrect post mount.
The one fitted is a uberbike Post to Post PM6/160mm Direct Mount to 180mm Disc Brake Adapter.
Any ideas which mount I should be using please or is there something else im missing ???
The one fitted is a uberbike Post to Post PM6/160mm Direct Mount to 180mm Disc Brake Adapter.
Any ideas which mount I should be using please or is there something else im missing ???
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Posts
ont see why the standard post to post mount like on the front does not work makes no sense to me lol.