Yeah, that caught me by surprise as well. The old silver spring I had, was about as stiff as one of those yellow springs! I’ve attached a pic of what it was doing to my filament (which I’m still not entirely sure of).
So, I used the weak silver spring that came with the dual gear. That way I can add spacers or whatever as needed, or switch to the yellow spring that also came with it. Easier to add tension than remove it. It doesn’t bite into the filament anywhere near as bad as the old one. Still waiting on the Capricorn tube, so I can get the whole thing re- assembled and fully calibrated, maybe re- run the temperature tower, and try again.