As the title suggests, I opted to implement this SB since I still had easy access to with the bottom skins off on the left wing and bot the top AND bottom skins off on the right wing. The fix was pretty straightforward, with the most difficult part being removing the old rivets once the heads were popped off. I'll proably end up having two different variation of this SB in regards to the bottome 470 rivets. After completing the left bracket I've read from numerous builders posts that the rond heads interfere with aileron clearance. Van's solution was to either file the aileron back, add extra washers to move the aileron outboard, or drill out and replace the offending rivets with counter sunk rivets. As of this writing I have yet to assemble the bracket for the right side, but when I do I will most likely go ahead and counter sink the bottom rivets on the bracket. As far as the left side goes, I'll just wait and see how it goes with installation. I've read mixed results about the success in adding washers for spacing.