For one, I've NEVER seen the rod Butt Up against the pockets end. There generally shown as where it is self moving too.
Set up position of scope towers so it fits into stock and all fasteners go int correctly. Done, tighten the towers to the air tube.
With that rod pinch screw loose, Set safety on trigger.
Next determine how much 1st stage travel you want and add or decrease the gap of the linkage on the bottom screw. Once set tighten the rods pinch screw.
If needing more BITE of the screw head against the rod, Cut a small thin strip of HD tin foil and place in the trough under the rod spacing it out just slightly.
DON'T MASH down on trigger once sear breaks ... OR Back off on the Post travel screw to allow more trigger travel post sear break.
Good luck,
Scott