Every time I have to install the take down pin. I don't know what the trick is to push the spring down enough to get the pin past the spring. I eventually do it but it's got to be easier than what I go through. Tonight I finally gave up trying to insert the pin with the slide on the frame, removed the slide and fiddled with the pin until I got it past the spring and then slipped on the frame and pushed the pin in place. Any secrets as to how to do this with less drama?