i would put the standard rear uprights on to reduce the toe.
In position 1 put a 10 gram weight to help the iniital steering.
http://www.trfracing.co.uk/page_1265126433672.html this is lees setup from taplow.
He runs a shorter front link than you to give more steering, id also try front pins ior if there too much yellow mini spikes rather than normal staggers.
Cut staggers may also work