TargetTalk

I have a question about sights. I have a Feinwerkbau 800 Top. It has the pistol grip. Anyways, I am going on three sights since I bought it last year, I have to always tap it to get it to move. I want a better sight so I am looking for input. I am shooting 628-630s and I want to get the 635s. Thank you for your input.

It is not normal to have to tap the sight to get it to move. Do you have a blinder that binds between the movable aperture and body of the rear sight?
Do you know how far a click is supposed to move your group? Probably 0.1 or 0.2 scoring rings per click, so you may just not be clicking enough.