As well as the adjuster mod (drilling the hole deeper or fitting a longer screw) the bearing surfaces of the trigger/sear benefit from smoothing. One part is laminated from four layers of steel and the surface is similar to the himalayas. I stoned mine off with a small oilstone slip, used dry, and did the same to the other bearing surface until dragging a fingernail across revealed no roughness, do not remove too much metal. A smear of moly grease is then all that is needed. I also replaced the trigger spring with one about half the strength. This left the trigger much lighter, smoother and very predictable, to the extent that I have not as yet felt it necessary to do the adjuster screw mod, mine still has no useful function, not being in contact with anything.
Jef
AKA Porthos, a Piskateer of Renown.
I am a pistaholic, and proud of it
UBC Secretary & Web-ManagerTHL Marksman of the Year 2010
(Airgun Section)