I will answer these one at a time...
1. crpntr 133 - The Brigade is a BC that is only made for ScubaToys - you will not find it in our Online Registration Database. However, it is a essentially a Ranger BC, so you can either register it as a Ranger, or just mail the registration card in and we will enter the info for you. None of our BCs have serial numbers, but your original sales reciept (from an authorized dealer) is always your "proof of original ownership".
2. Gdon - For someone who has never rethreaded the ripcord weight system it may be a little tricky at first. However, after doing it a few times it becomes VERY simple. Larry from Scuba Toys has one way of doing it, I have another - both work equally well, but we will both agree that it is not HARD by any stretch.
I have personally talked to many people at consumer scuba shows that tell me that "Manufacturer X says that your ripcord system is impossible to do and I would have to return it to the factory if I ever dumped my weights, so I should by their pullout weight system instead." NOTHING could be further from the truth, and I like to respond by showing them how easy it is to do, then by asking this question:
If you were out diving in some lovely exoctic location, perhaps on a live aboard, and had to dump your weights you would pull our ripcord system, drop your weights and head to the surface. Let's assume that you were fine afterwards and still had 2 dives left on the trip - with our Bc you rethread your ripcord weight system, borrow some weights from the boat, and continue your week of diving in your own BC. Now, let's say you were using "brand X pull out weight BC" and did the same thing. If you, or someone on the boat, could not retrieve your dropped pull out weight pouch, your BC is basically unusable until you can get a replacement pull out!! You would have to finish out the trip in a borrowed BC, at best. Just some food for thought....
3. RobinG - your original sales reciept is you proof of purchase. I would suggest to anyone getting a photocopy of your reciept and stapeling it inside your owners manual. That way you will always know where it is. That being said, if it is a minor repair, we will generally take care of it regardless, or for a very small fee. As with most things in life, you catch more flies with sugar than with salt!!
Dive safe,
Scott