Evidently not very carefully, if it comes as a shock to you that Behe endorses an old earth and universal common descent. And your memory seems to be going too, as I have cited the appropriate sentences in DBB to you before.
I would be very interested in a citation where Behe endorses 'universal common descent'. I don't think he has.
I believe he has stated words to the effect that ID does not require one to take a position on 'common descent', which is quite different from 'universal common descent'. I think pretty much the same could be said about the age of the Earth.
I also recall reading somewhere that Behe believes that the 'intelligent designer' is God.
In that cae, you should have little trouble in citing the page numbers.