Originally Posted by BruceGill
Adjusting the first stage can ONLY be done by bending the little tab. There's only two other forms of adjustment on the Record unit; the one for trigger weight, and the one mentioned above for Sear engagement / creep adjustment.
Just go slowly / gently as they can snap off. And the torx screw can be bloody tight on some.
You could drill / tap the blade front of the blade and pop a grub screw in and drill the tab to get a key through. I'm sure I've seen this done before. Bending the tab is easier though!