I don't have a P-10C handy with the factory sight cuts, mine is an Optics Ready model, but the sight radius is about 5.7", so a 2" correction would require you to remove about .032" from the top of the front sight. I've done that with a file on factory sights before, then take a blueing pen or marks a lot and cover over the filed area. If you screw up, you can still buy a new sight. If you don't screw up, you might not have to buy a new sight.
Joe