Reattaching spring in IBM XT Keyboard?

[Hypersphere]

I have an IBM XT keyboard that has an unattached spring in one of the barrels. The spring is not attached to its post on the rocker assembly. I have tried positioning it and twisting the far end of the spring clockwise. However, even if the spring appears to be in place when I replace the keycap, I get a spring action but no click. Is it possible to replace the spring on the rocker without pulling the metal plates apart and removing the rocker-spring assemblies from the barrels?

If I do need to do a complete disassembly/reassembly, does anyone have any spare XT spring-rocker assemblies to sell in case my problematic one is damaged and needs to be replaced?

Thanks.

Edit: Found the Ripster Chopstick method. Will give this a try. However, I think that the XT spring might be damaged and so I could still use an extra spring or two. I have some extra Model M springs, but I think that these might be a different length from that of the Model F springs in the XT.