Gulli cover – fall at speed 30

hello, so now it caught me, too. but it was all such a stupid thing that I still don’t quite understand it. in a very normal left turn in chemnitz was a deeply recessed gulli cover. when I drove over it it pulled away the back of my head. but I had at least 30 speed on it, so completely adjusted speed. my buddy drove ahead and did it without any problems. after oil had run out on my engine, I got the police and the wool I really still had 3 points and 75 euro penalty for “non-adapted speed” (as if it had been there).Otherwise I should have managed the curve effortlessly. well that’s what I thought. anyway I still have a slight kink in the front fork. does someone have any idea what an original fork costs for a 96er bandit 600 and is there maybe a few inexpensive tuning alternative? gruß marian