straight

After aligning my camera in a straight line with the path I want to fly I push the stick forward and my Inspire drifts to the right. I've updated the firmware to the newest version. I've done IMU, compass, RC, and gimbal calibration. I noticed when I landed that my camera looked slightly off...

When I first started flying my inspire it had a vertical speed of around 11-12 mph. I never noticed until today, but now it's only getting 6 to 7 mph. Anyone have any idea why? Also, when I take off full speed the aircraft doesn't seem to want to fly straight. This seems to be worse in...