puttin in new antenna, nut wont go

well, after a couple hours at it, the nut wont move worth a damn and ill officially placed 3 new scratches in my paint, 100% destroyed my old antenna, broke the metal post that goes from antenna motor to fender, and really frustrated myself. wtf is this so hard for me and no one else :bawl: fuckin DIY hates me…something always goes wrong, probably going to take a dremel to it if no one else has any suggestions, cuz right now i have a hole in my car.

http://www.g2ic.com/forums/showthread.php?t=129955 for what broke and the piece I need…