Gap too large - TANDEMKROSS Eagle Eye Rear Sight Set

OK, I'm not an expert shooter by any means, so take this with a grain of salt. I find the gap a bit too large for me. Compared to the stock rear sight supplied with the Ruger 57, I find it easier to hit the target with stock sight. I find it more difficult to center the front sight in the rear sight of the Tandemkross Eagle Rear Sight. Simply too much room in the gap to play with. I have not tried the peep sight yet.