After using camera+lens set which uses modified GoPro kit’s Back-Bone Ribcage for some time

After using camera+lens set which uses modified GoPro kit’s Back-Bone Ribcage for some time, you might start noticing some problems. In case you have the problem of stitching not going well, or any other problems, you should check whether the position of image circle is right or not.

Normally the image circle should be in the center of the screen. However, something some part of lens shifts out of its position or something else happens and the image circle gets dislocated from the center.

Please check below article.
Method of adjusting image circle position of camera+lens set.