Weird Model M key - spring won't buckle

[Half-Saint]

I bought a blank set of 2-piece keys for my Ambra keyboard. All is fine except for one weird key. It looks virtually the same as all the rest with one difference. When I push it, the spring doesn't buckle properly and there's virtually no click. Any ideas on what to do? I know it's not the problem with the spring because it does that no matter where I place the key.

Cheers
SainT

[ch_123]

When you put the key on, did you make sure to hold the keyboard upside-down whilst reinserting it?

[kishy]

Keyboard upside down?

I'd recommend tilting it back (such that the front is raised and spring leans away from you) but not upside down...

[ch_123]

Well, upside down makes sure the spring lies along the top of the barrel, which I find to be the optimal angle for making it fit right.

If anyone says "That's what she said"...

[kishy]

That's what he said to her when she just didn't get it.

[Half-Saint]

Believe me, I just finished inserting 101 keys... they all function properly, except the one I told you about. Will try again but I think there has to be a difference between keys!

[brkz]

Sometimes just taking the key cap off and reseating it a few times will make it work right even if nothing else changed. Press the key a few dozen times too, sometimes they won't seat properly right away but clear up with excercise.

[Mental Hobbit]

Put the offending key and a working one side by side and eyeball them carefully in bright light. Could be just some lint.

[Half-Saint]

Inside of the stem is not all nice and smooth. I tried hacking at it with a small screwdriver but can't get it as smooth as the rest and I don't have a file... I'll try again after work.