How do I only pin to the newly spawned instance?

I've got sprites that are created with with a keyboard event. The may have some other sprites spawned and pinned to them at the same time.

The first spawning works as expected and the pinned sprite follows the sprite it's pinned to.

When subsequent sprites are spawned, they're pinned to the wrong thing though.

The SYN sprites all follow whatever the latest packet spawned is.

The ACK sprites all follow the packet, which is now stationary.

The SYN and the ACK are both created in (what seems to me) to be the same way.

I've got a c3p here: https://drive.google.com/file/d/1qSG2DtVnhYu5JrLeMv-hRscG_laO-FUf/view?usp=sharing

On event 3 you have the wrong object it should be Follower B pin to leader. That's the only problem I can see.

Thank you, thank you, thank you —!!!

That's the problem. I'd even managed to make the same mistake again in the example. I don't understand why the behavior is quite what it is with that mistake, but with it corrected everything works as it should.

Did I say thank you?

Thank you