pitch/roll and the 3D model orientation

[ArduBtSonarWii]

Hi Everyone, I am new to multiwii, now buiding a quadx with arduino nano and mpu6050. Currently I am still testing with the config GUI. One thing I was unable to figure out is about the 3D model and pitch/roll on the upper right corner. According to the 3D model, the front arrow is between 2 motors. but when I rotate the quad along an axis between two motors, the 3D model and pitch/roll simulator does not rotate along the same axis. I assume that this will cause problem in real flight test. Any advice is greatly appreciated.

[Hamburger]

probably the physical orientation of mpu6050 does not match the code configuration. Either rotate the sensor or change the orientation in the config