One of the drop targets on my Eight Ball Champ doesn't like to stay up.
If I manually reset it, it will stay up, but if the solenoid pops it up, it falls back down.
When I push it back up, I can easily push it back down (if I push on the top of the drop target, I can't do that to any of the other targets)
As far as I can tell, the target is just held by friction. It almost seems like the metal the target rests on isn't level.
What actually causes the tension? What am I missing?

The coil is doing its job. It pops it up. BUT it doesn't take much for it to fall back down. I think what is happening is it pops it up with so much force, that recoils just enough that it falls back down. I don't think there is anything wrong with the coil.

The drop target itself is brand new. The little "lip" that holds it in place looks ok. I guess the target itself could be bent.
I don't think the spring is worn. Doesn't feel like there is any more or less tension than the other springs.
I suppose there could be something wrong with the metal it rests on.

Here is a photo of the offending drop target. It is currently in the up position.

IMG_20190226_230441 (resized).jpg