Door handle gets stuck...any fix?

[rodster]

When you pull the handle from the outside, is there spring tension trying to pull it back to its seated position but it doesn't quite get there? If yes, then my unqualified hallucination is, something is wrong with the green thing or it's related parts. If that's the case, WD-40 will only make a mess.

If you want pics of the door guts, I have others from different angles.