I have a Nikon DX SWM ED 18-55mm Autofocus lens that broke down. It got stuck and I decided to take the lens apart. It turned out that the flare cutter had come out somehow. Now the problem is with the Lens Straight Keys, provided it's the accurate term. They are bent. I want to know if that's normal and if not, is it okay to use pliers to straighten them?

I have attached pictures to show what I mean. Any sort of help would be highly appreciated.