EXUP Valve Bent (Bending back into place)

[mark g]

Just out of curiosity how do they get bent in the first place??. I went to inspect mine the other day only to find nearly all the bolt head rusted beyond recognition, by the looks of things it's never been touched......BUT, it's running sweet even though it's coming up to 40k miles. I plan to leave sleeping dogs lie until the winter and get the header pipes off to a local engineering company to get the valve and all the old bolts out.