I have the key and it's true, it's really hard to make it 100% straight. The best I've achieved so far is to make it straight, but it has a tiny curve at the very tip, which is not that bad I guess. However, the key is too sensitive. It bends by itself even on room temperature. Not all the way, but it bends enough to be noticeable. I'm still working on it, so as soon as I figure it out completely, I will let you know.