The titanium wire that terminator uses is not pure titanium, but a titanium/nickel alloy. It reguires a special annealing (sp) process to bend it correctly. Additionally they have a patent on the wire. You can buy pre made forms direct from them, but usually have to buy a large number.
Occasionally, they will get one that is not bent properly causing the blade to come off. They fixed this a couple ot years ago, but if you still have the old baits, you can send them back and get them replaced.