strange problem with ATI 5570

i tried to oc this card, but whatever i changed the clock to it would set to 157 witch slowed down everything.. making lines on my screen when i moved windows around..

so i figured id flash the bois to fix it..
one thing i noticed about this card is for some reason the fan defaults to only 28% no matter how hot it gets..

while i was in there, i set the fan speed to a steeper curve, 100% at 60c instead of the defualt 104c..

i figured it was a good idea.

so i set the primary speed to 700 clock, 900 ram and the secondary speed, witch was 157/200 to 400/900. now its working perfect.. except..

no matter how hot the card gets, up to 70c the fan is only at 28% even tho i changed it.

i have to increase the fan speed manually in CCC to keep the temp down when i play games.

any ideas?

i guess its not a big deal, but id like the fan to speed up when i play games automatically.