I left out sag which is ruled by jupiter!

" Aquarius - Saturn and the new ruler Uranus both co-rule. Some ignore Uranus
Pisces - Jupier and the new ruler Neptune both co-rule. Some ignore Neptune "

From what I understand it actually seems to be more of a rule to ignore the traditional rulers than the modern..? Most astrologers and people interested in astrology seems to be generally comfortable with the modern rulers and take the traditional ones as second-hand choices.

Personally though I can see where saturn comes in with aquarius for instance (partly because uranus in itself is more fiery in its influence than aquarius as a sign, aquarius can have a bit of a saturn-like streak). Also the other traditional rulers fit to certain extents as well but still not as well as the modern.

However I've tried out theories myself on what planet could be linked to what sign, and I sometimes can see how uranus is linked to the sign gemini. I still asign mercury to gemini but I've considered uranus for gemini. Most astrologers like Paul says consider virgo to have another ruler but personally I don't, I think mercury is inclined to the intellectual seriousness that virgo has.

actually yess, i was drawing a disposit tree.. but the thing is, i am not sure about new school and old school..

pisces to my perception is ruled by neptune (instead of jupiter)
but aquarius looks more like a combination of saturn and uranus
scorpio also looks like a mars-pluto combination to me...

If use my own chart:
ASC 0gemini
sun 4leo
moon 13cancer
Mercury 0virgo
Venus 15leo
Mars 9scorpio
Jupiter 4capricorn
Saturn 9scorpio
Uranus 9saggitarius
neptune 29saggitarius
pluto 29libra
Chrion 7Gemini

if i draw it out.. Sun, moon and mecury are in their own signs... therefor not ruled by another planet
mercury rules ASC/Chiron, and then moon stands alone...
my sun rules venus, venus rules pluto, and pluto disposits the rest of the planets...(if pluto is seen as ruler of scorpio, that is)