Greg B
.410
I think I found the problem. Because the plunger came out accidentally when I turned it upside down, I naturally assume the long skinny piece ( Pinocchio's nose ) stuck into the spring. I just watched a video and it looks like the flat piece goes up against the spring and the long Pinocchio nose piece goes towards the bolt correct.
Intuitively, I would have bet my life the long skinny piece went into the spring it just fits so perfect.
Yes. The long small end protrudes into the reciever and engages the pivoting link of the bolt.