Board Thread:General Nerf discussion/@comment-27306930-20161118070320/@comment-27306930-20161120042724

Hah ! You're funny BS.

Long story short, I'm not sure how I ever got this to work the first time I put this 8k spring in my Cyclone. Turns out it's slightly larger in diameter than the stock spring and wasn't fully seating against the plunger head. You see, the back of the plunger head on the CS is cup shaped and accepts the spring. (Thanks for the nice pic Rob)

Well, the upgraded spring was too big and wasn't seated all the way at the bottom of the cup. When I pulled back, the spring compressed as far as it could, but I needed another 1/8th inch to get the catch to, well, catch.

I used a sanding drum on my Dremel to ever so slightly enlarge the hollow space in the back of the plunger head so the spring would fully seat. And voilà ! We're back in business. Maybe even a little bit better than before.