Does anyone know the difference between the 40x standard trigger and the older Rem 700 or walker trigger. The 40x goes down to 1 1/2 pounds and the standard 700 Walker who knows. I have worked on the standards for years but never even seen a 40x standard [not 3 lever 2oz]. Schematics show them to be the same except the 40x is externally adjustable. Just curious.