I think I fucked up the Replicated Man quest.

I got to Rivet City and picked up the quest, but I was there to investigate the history for Moira. I wasn't really paying attention to the new quest I picked up, but I found a couple of clues in Rivet City and then this woman gives me an android component to give to Zimmer. I keep doing the Moira quest and it brings me to Pinkerton. Not really paying attention, I asked if he did the surgery and memory wipe and despite the fact that I had like a 70% speech chance he said no, he didn't but if such a thing was done he would be the only one who could have done it.
Then it prompted me to keep looking for clues or give Zimmer the component to end the quest, so I think I screwed up. I checked the Fallout 3 wikia page and it said there should be clues with Moira, the Megaton Doc etc but I can't seem to find them. I think the only way I can finish the quest now is to give Zimmer the component and tell him the android is dead, but that would man that I don't get the plasma rifle.
