yeh more castor = hevier steering. + straight line stability...
they put it into powersteering setups because it doesnt worry the driver about how heavy it is, cos of pas, + you get the stability
toysprinta=== ive seen that done on a japcresta.. they switched side to side so wen you adjusted camber you also adjusted castor... i think? it was at an angle if you no what i mean
EDIT - here it is... speedhunters.