Soldering would be no issue for me, but simply replacing a spring is even better. I will order some parts and try this. Thanks for the info :)

Still using mine but the left click is starting to fail permanently.
It had a phase a couple of years ago where it liked to double click but that went away again after a while.

Now its starting to seriously double and triple click and sometimes not click at all.

Might have to start investing some time looking for a replacement. o7