Originally Posted by Tench
The let of point of the trigger cannot be adjusted forwards or backwards without repositioning the hammer sears position in the hammer but you can shorten the length of the first stage by limiting the amount the trigger travels forward from the sear release point. To do this tighten the grub screw infront of the finger pad that can be seen deep up between the trigger and the end of the bottom sear. The one on the bottom of the sear with a lock nut on it only limits the depth of sear engagement so if the second stage release is not creepy or too heavy don't tighten this one.
Come to think of it the trigger itself can be slid forwards or backwards on the GS as it is mounted on a rail, this would have a similar effect to being able to alter the position of the let off point.
Hence why i said if u know what u are doing adjust away...mine was the quick version lol