If you swapped the motors to tractor configuration it shouldn’t affect the gyro, unless you moved the motors to the opposite side, thus making right left and left right. But simply flipping the motors around shouldnt have that effect on the gyro. Check if you have the motors on the correct side for each, and that they are plugged in on the correct side for each, that’s something I’ve done a few times and it doesn’t make for a good flying the plane……