Adam does run carpet towers, so i think that's a fair guess he was on this occasion.
As to which holes, i have to say i have no idea. I suspect (and it can be no more than that) that the holes marked are if it were on the std towers' holes if that makes sense. Certainly those holes marked are where i would start on std towers. If you are running carpet towers, then i suggest using the holes that would be equivelent.
Not sure actually how to find out for sure - as the one guy that i know that would either know or be able to find out is currently on the otherside of the world!!!! I'm not jealous at all..........honest