Sticky Key fix:

I threw away the spring and pin, and am on the downhill side to where I was putting the tumbler and black cylinder back in.........with no luck.
after an hour of this, I separated the two and put the tumbler in....but now I cannot insert the black cylinder.

#1 shows key in off position




this is the black cylinder ..........showing the flat outside segment and the inside concave segment


does anyone know how the cylinder gets put back ........?

should I have put them on together ?