Are the springs supposed to be extremely hard to pull out of their shell, at least when pulling them by hand? I'm trying to hook them onto the things at the top of column but they won't budge at all. Also not sure if that's how the plate is supposed to be screwed on the column. It came separately.
edit: ok I realize now I have the plate upside down
My guess that yours are either rusted or stuck by some dried up lubricant. I'd try some brake cleaner first and, if that did not help, a spray penetrant like PB Blaster.
I guess mine is a D6. But the springs pull out with moderate force (but they are already extended to may be easier) so I'd guess either yours are stuck or you aren't pulling hard enough. Yours look in decent shape so maybe once you get them to budge they'll be more cooperative.