I hear all your complaints, and I take no offence to them, as you are right. I'll re-iterate my previous comment: Feel free to make your own, in your own time, and using your own bandwidth, until I make a better one. I'm not a proud person (in the bad sense).
Why do you think you would hear a click from a mechanism which is designed with precision, so that the spring buckles at a
precise angle? Go read the Wiki - ripster already explained these things to you. The point is that you see what's inside, and not just a static image of it.
Put your complaints in writing, along with a cheque for £25, and I'll gladly help you :lol:
If you wish to do better, do better.
Thank you.