I decided to install 4 platenuts to hold the forward engine control backet. Four #30 holes were already drilled for rivets on the F-746 fwd engine control backet and the F7105A center sub panel.. I used these to mark and dill the paltenut rivet holes. deburred and counter sunk the rivet holes and checked for proper alignment of the screws. I used the squizer to install the platenuts. Very tight quarters and on the last rivet the squizer slipped a bit and bent the center subpanel slightly. I was able to remove this. The picture was taken before. Install the F-746 Fwd engine control backet.