Charestpr,
The "quality" ribbon cables are dual layer cables. This alone is not any reason for your gimbal issue. Beyond that one would need a bit more diagnostic information to assess the issue. I unfortunately am not that person as I too am struggling with somewhat the same issue. I noticed that my pitch motor was getting hot....very hot and I could not adjust the camera tilt without help from a gentle nudge. I reset my ribbon cable as it was rubbing on the gimbal arms. I now get zero gimbal movement upon start-up and after start up but I still get video. I also now have a gimbal hardware failure error which I did not have before. I ordered a new pitch motor and ribbon cable in the hopes this will solve the problem. Next step....send for repair. Sorry to not have been of more assistance.