Hi, I'm a martial arts instructor and I recently bought my first pair of kamas from century. However, they are incredibly flimsy. I was practicing some flips and dropping the kama onto a mat from just a couple feet bent the blade. I'm fairly certain they are not balanced properly either. Because the blades are so thin and flimsy, the balance point is at the very top of the handle. Can I get suggestions for durable kamas? If there is anyone here who has a pair that has lasted a couple years or more, I would love to know where you got them. Thanks.