Hello...I just bought a Walther P22, 3.4" barrel, and upon reading the manual, I was having trouble getting the take-down thing to slide downward. I just looked it up on the internet, figuring there was something I was doing wrong with one of the safetys or something. A video I seen just said to activate the safety, remove the magazine, the pull downward on the take-down. In the video, it seemed to move effortlessly. Mine does not want to move, and I am afraid to force it. I am not able to pull the take-down down. Is there something I am doing wrong, or what? Anyone else have this problem?

Thanks for any help!
Greg