on my soul silver i edited my save to have all key items. when i eventually got to cerulean, i saw misty wasn't there and went to the power plant. i talked to the person on the ledge - thing and he took a machine part that wasn't even in my bag. now i can't do the part with the rocket grunt and now i'm stuck with all but that badge and the final one... is there a way to revert my save to where i haven't given the man the machine part yet or to where i can still battle misty to continue the game? Please respond with an answer if you can because i'm too far in the game to restart.