After beating my head against the wall for way too long trying to wrestle my sear spring back in place, I came up with a stupid-simple trick.
The spray tube from a bottle of Rem Oil spray is the perfect diameter for a slave pin. Snip it just long enough to hold the spring in place and push it out with the real pin once it's in position.
Took me all of a minute once I had the idea. Hopefully it will save someone else the frustration.
Stay safe, shoot straight!