Yeah. Dumbbell section was added a few months ago. I have about 150 videos left to edit, upload and write instructions for. All of the dumbbell exercises being about 50 of those videos.
Awesome website! Love the radio button for equipment type, and the demo videos are really great. I also like that the videos play immediately, but also have links to youtube.
Humble suggestion: if you have "slots" where you know you have videos to upload, I wonder if you could say as much rather than show the 404 page. That way, you can simply click through to other "equipment levels" without breaking the sequence.