Right now I have a MakerBot Replicator 2. The project I am working on requires a dual head extruder, but the Replicator 2 only has a single. I do not wish to buy a new replicator 2x, so I was wondering if I could buy a double extruder and then just install it in place of the single on my Replicator 2. Theoretically, would this work or are there conditions I am not thinking of?