Looks like you've attached the cage wrongly. It should be fitted such that the spring is pre-loaded.
(I have one of these mechs for spares if you ever need bits).
@rodabod started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Looks like you've attached the cage wrongly. It should be fitted such that the spring is pre-loaded.
(I have one of these mechs for spares if you ever need bits).