Further to the 'Flight Fine' & 'Ground Fine' pitch discussion:
The -800 series VC8 had switches to motor the props to Flight Fine. Under normal circumstances there was no requirement to use these. Some misguided souls considered placing them to FF an amusing way to commence taxi. RPM would drop and TGT rise. Not a great idea.
Otherwise the system was automatic - can't remember whether it was controlled by weight-on switches.
The lever system with which the Argosy was fitted between #2 & #3 throttles clicked forward as the throttles were opened and armed the Flight Fine Pitch Stop and, on landing, had to be physically pulled back to remove the FFPS and permit the props to reduce to Ground Fine Pitch.
There was an embarassing incident caused by a take-off misunderstanding:
Power goes on and FFP lever clicks forward.
Crewmember asks if take off clearance has been received.
Throttles closed and clearance confirmed as having been received.
You can see where we're going now, can't you?
Throttles re-opened with props in FF and a couple of donks overtemped - soddit!
There but for the grace etc etc.