Try EXTRA tension. Do the trick in the second video above but pull the cable even harder when clamping it. You'll be able to get a better grip of the cable if you pull it with small set of pliers with your right hand, and tighten the bolt with your left hand and hex key.

Remember if you dont first back out the high limit screw outwards far enough. No matter how much high tension the cable has, the FD cage movement will be prevented from moving if the screw is in too much. That is important. Back the screw out nearly all the way so there is no chance whatsoever of it stoping the FD from moving before attempting anything else.

Once you achieve the correct tension, there should be a big gap and sufficiant clearance. Only then, should you turn high limit screw inwards until the gap is around 1mm.