Should I calculate Part of Fortune in nativity when doing directions by right or oblique ascension of ASC, Moon and Sun? Cover of this book says oblique:

http://www.amazon.com/Primary-Direction ... 1933303174
"Then, the resolution of problems unique to Primaries: The proper method to calculate the Part of Fortune (Oblique Ascension/Descension, rather than simple zodiacal longitudes), various unique challenges with primary directions and the moon, and the true way to calculate directions to house cusps, along with some novel shortcuts."

Hareton wrote:Should I calculate Part of Fortune in nativity when doing directions by right or oblique ascension of ASC, Moon and Sun? Cover of this book says oblique:

http://www.amazon.com/Primary-Direction ... 1933303174
"Then, the resolution of problems unique to Primaries: The proper method to calculate the Part of Fortune (Oblique Ascension/Descension, rather than simple zodiacal longitudes), various unique challenges with primary directions and the moon, and the true way to calculate directions to house cusps, along with some novel shortcuts."

I'm sorry, but I didn't make myself clear. I obviously meant POF calculated with zodiacal degrees of ASC, Moon and Sun vs POF calculated by oblique ascentions of ASC, Moon and Sun. Which one should I use in primary directions.