I agree that the Walker triggers can be adjusted to become very serviceable by an experienced smith but I have also had good luck getting the X-Marks into the 2# range. There is a weight adjustment screw in the front of the housing like on a Walker except it has been filled with Loc-Tite of some type. Take a small pick and remove the goop from the Allen head and exposed threads. A 1/16" Allen wrench can then be used to adjust the pull weight just like on a Walker trigger. Disclaimer, one out of ten will strip the Allen before the screw will move. The screw on the trigger face is put there to make you think it is adjustable. You can typically make the pull heavier with it, not lighter.
