Since this isn't a locked thread, I'll add my lesson learned here as well. When performing step 6, make sure you understand the issue with re-inserting the slide lock lever in relation to the spring. If you're going in sequence here, you might not have read the section on reassembly, or watched the video yet. WATCH THE VIDEO BEFORE YOU PUT THE SLIDE LOCK IN!!!! It's very easy to screw this up in step 6, where you're inserting the slide lock without the slide installed on the frame. You will bend the spring and your gun won't cycle properly!