I just finished taking a part and putting my macbook pro (15, late 08) together for the 2nd time. This time, after I rebuilt it, SMCfan reports the temperature as being much lower than usual - around 100 degrees F. It never got below 100 before, and sometimes it goes to <100. Is this because I cleaned it after taking it apart? I also added color foil over my keyboard (to color backlight), will that cause ventilation problems??? I was planning on taking it off (it didnt work), but it will be a few days.