Nameless did the optic cut on my CZ P-01 and did a great job:I got my Shield Plus's sloped cut leveled and converted to Holosun K by Nameless Armament. I'm satisfied with the work, but it took about a month altogether.
It's worth a shot, but the potential issue with this is that the angle may be considered in-spec with the medicore Crimson Trace optic that they used to bundle with some Shield SKUs.send it back and make them fix it or give you a new slide. Either mine did not have this problem or there was enough play in my optic to account for it.