correct way to adjust my spolar gold reloader so the primers don't stand proud of the shell base. I

I tried to adjust my spolar press to seat the primers deeper into new nitro gold once fired shells. I read over the book that was sent with my unit but it really did not say how to adjust for seating primer deeper or adjust shaft weight correctly snd the set screw in the bottom of the shaft weight to get nice and flat . Can anybody direct me how to do this correctly after i tried to do it and messed up the adjustment of my primer seater?

 

At the bottom of the primer seat is a small set screw, to seat it deeper screw this out a little at a time.

 

I loosened up the set screw in the black weight where the allen screw is you spole of and gave that a half turn to the lrft, so i don't think the shell base is flat anymore, it seems to have a slight dome to it. How do i get it set perfectly and lock it up before turning the allen screw in its bottom in a clockwise direction?

 

There is a set screw on the side of the weight, once you have the correct depth tighten it