Differences in Readers
Selection of Fruitful Significators
In KP Reader III and Original volume1965, the occupant of a house need not always be stronger than the owner.
The owner is strong when -
a) occupant is in enemy's sign or neecha
b) lord of the sign is exalted
c) lord of the sign is conjoined with a planet in it's own sign
If owner is strong, the ranking of significator will vary as below. Most of the KP astrologers are not following this important KP rule.
Reference: http://groups.yahoo.com/group/k_p_system/message/22460
Other
By the time more material is being added on this topic, please refer -
http://groups.yahoo.com/group/k_p_system/files/Difference%20in%20Readers/
Download 1966 Reader (e-book) - 2nd Volume - http://www.scribd.com/doc/24500319/krishnamurti-Padhdhati
How many steps make significator - http://groups.yahoo.com/group/k_p_system/message/36924 (what is two step, three step, four step etc.)