Very interesting.
mussonman, I wonder if you could post a short video clip with the original sound? It might be nice to have a comparison. If you don't mind.
anzel2002, do you think the tone of his voice does not match the room? Is there a way to fix that without re-recording?
I'm having to do some ADR too & trying to figure out some stuff.
buscando, I don't mean the tone of his voice, per se, but more how he sounds in the room he is in,
think of a gym, a kitchen , a bathroom, hallway etc,
how they all sound different when you are in them and when you are speaking,
they all have different delay, echo, etc, so your ADR has to match the sound of the place you are in,
in the movie,
like, the OP, is in a basement, so he has to match how a basement would sound, with low ceilings, unfinished floor etc,
probably some tips for your ADR, would be, don't be too close to the mic, too many people do this when they do ADR, and it does not sound natural,
when you are on set, the mic is not right near, or in front of your mouth,
and your acting has to match what you did on set too,
ADR is a pretty difficult thing to get right and make invisible,