Well, they bend from not landing correctly from jumps. Yea, I do that.
Also, the only way to tell it's bent is that you'll start to notice the gear cover not fitting very well at the top. At first, I thought it was the cover. I replaced the cover, same thing. I removed the plate and could see some slight creasing through the anodization. Putting it on a flat surface verifies it.
I have 2 of the milled plates from old b4.1 s lol