I would add a caution to the above. I added a Clippard needle valve, two actually on for up one for down, with tiny non return valves to give total control over the nosleg retraction speed. This is vital to avoid an out of sequence situation as the air micro switch triggered by the noseleg closes ALL doors and this must not happen till the mainlegs are up and locked.

On my AirWorld Hawks I have added these needle vlaves to the JetTronics gear controllers to give total speed control of the gear operation, magic !

Regards, David Gladwin.