My problem was that I did read the manga to... chapter eighty something. and then there was no more, I followed it for while and forgot and... Did not ever get into reading it again.
I should though, it seems. I rather enjoyed full metal too.
I lol'd at time at translator's note on some forum thread about fuhrer's son being a homonculus, people responding to it "nice theory and all, could be but, naah" and then... SHIT HITS THE FAN. That is extend of what I remember