ORIGINAL: Greg / MO
Typically, I've found that my BowTechs shoot best when the arrow is perfectly level and perpendicular to the string, but that is on binaries and not true dual cams; I didn't shoot BT when they had the duallys.
Just about every single cam I've ever seen favored a 1/8" high nocking point though, or somewhere around there. Individual shooting characteristics and mannerisms could account for a different nocking point.
Same results, thanks for the typing Greg.