Quattro trigger adjustments - Hatsan 125 TH Vortex .22 setup?

Hello friends,
I need help on setting up the Quattro Trigger of Hatsan 125 TH Vortex .22 (The rifle is from 2014 model). I want to reduce the effort when I press the trigger because there are two things at the moment:
1. In the second degree I have to press the trigger to move the rifle;
2. In anticipation of the shot, I increase the pressure on the trigger, and when the rifle breaks, I just start to jerk and so I can also move the rifle a bit ....
So I want to reduce the second degree effort within the limit ?!

I watched the few videos available in YouTube, but for me things do not look like the video clips ?!
At me the three "screws" are so small that (I'm a bit blind) I see them almost just like openings ... I suppose they are hexagons with size maybe 1.5 or something .... I apply pictures and hope someone help the size the key:
1527327020_4593148815b09292c181e46.10741291_2018-05-26_12_05_33.jpg
1527327084_15377223675b09296c04f4e9.17670569_2018-05-26_12_05_19.jpg


What I understand (as far as I understand ...) is that I have to turn 1/4 counterclockwise the one behind the trigger to reduce the strength of the second degree, and the others in front of the trigger may not push them, or at least only the middle one I guess what exactly is, and the first one from the barrel is for the first degree and I do not think I should touch it?

Here's a shot from the gun's guide:
1527327385_8463437935b092a992a5a01.83795380_HTRA.jpg

 
Watch this Video series By Mike Steppings I did this to my Hatsan 95 which is almost Identical to your Hatsan 125 he will explain in his video's how to tune and adjust your trigger Mike Does a very good job at explaining ,one of the best how to video's on you tube just take your time you can do this I did and I'm a idiot LOL GOOD LUCK !!




 
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Hello again,
I watched the clips, but it's just a disassembly and not a setup ...

From this video:
I understand the principle of work and what should I set up but still do not understand what instrument to do? On the disassemble clips and there the first two "screws" in front of the trigger are bigger and I can see what can be developed / adjusted but as I applied a picture of my trigger - there are three small "screws" I can't see what I can develop with them?