Adjusting XS Big Dot on my M36

[Glockinstine]

I have had these Big Dots on this gun for about 5 months now. Since installtion i have continuosely been adjusting the rear sight to the right. It seems that no matter what, it always shoots left about 3 inches. I am considering moving the rear to the right more, but I'm way over there as it is. Any ideas??

Used to shoot dead on with factory sights.

[proactive]

Did you shoot dead on with stock sights with this gun? Even if you did, it could be as simple as being out of practice or some other factor affecting your accuracy. I would recommend moving the rear back to center and having someone else try the gun. Just my 2 cents.