Hi, Newbie question, In watching youtube videos on compass calibration I am seeing two different techniques in part 2 of the process. I know the important thing is getting the correct led signal, but I'm curious which is correct. This maybe hard to explain w/o pictures, but I'll try. Part 1 I get, in upright position rotate counter clockwise 360 degrees. In part 2, everyone turns Phantom nose down, but then some people rotate it 360 degrees in the horizontal plane, so that the nose is always facing down. Others face it nose down and rotate it 360 degrees in the vertical plane, so that the nose is down, then away from you, then facing up, then towards you, then back down. It seems like that would make a difference. Which is better? Hope this makes sense. Thank you!!