Amazing the stuff you knew but can't quite remember (or be bothered to Google) as you get older.

1980s Webley generic trigger, as on Vulcan/Viscount/Tracker etc.

You screw the badly-located adjustment screw out (anti-clockwise) to make the trigger less rubbish, and in to make it, er, more rubbish? But don't screw it out too far or bad things happen? Is that correct?