I have my phantom, all calibrations done, read everything everywhere, and got maybe 20 flights so far. I have the toilet bowl effect. Now many of you have the same. It turns out the NAZA manual explains how to fix this (page 29). You find your magnetic declination of your area and you fix it accrodingly (you either turn it left the number of degrees if you are negative or right the number of degrees if you are positive. Check yours here: http://magnetic-declination.com/ Easy enough. Should fix the toilet bowl effect but does anyone believe this may have some correlation to flyaways or loss of control? The GPS and compass are tied together and fight for true and magnetic north, so if all the GPS modules are installed the same way but needs to be adjusted depending on your location (which the NAZA manual on page 29 clearly explains), then anyone think it might be related?? As anyone done this procedure?