Keyboard springs

[Emashzed]

Hi all


So yeah, there was keyboard cleaning, and springs were lost. 
Rather than pillaging another CPC (I hate stealing from one, to give another. I'd rather fix everything) I was looking over at Aliexpress to order a bunch of new springs, but I'm unsure about the precise model to go for. Also, there is no mention of the springs in any of the official service manuals :/


Do you guys have per any chance precise knowledge of the type of springs used in CPC keyboards ?
In my case, I'm looking at a CPC664 keyboard, and I know different CPCs have different springs, but I thought it would be cool to compile a definitive list of all things springs related for the future, for any type of CPC (and post this on the wiki somewhere).


In particular, I'm unsure of the strength of the springs (I see 10g and 20g springs for sale ?)
As for dimensions, I guess I can try and mesure them as precisely as I can, but any official info would be a plus.


Thanks in advance !