When you are using wing bolts to hold the wings in place, only one wing adjuster per side is needed, I do use two wing bolts per side. One in front and one behind the wing tube.

Picture #1 - Is an installed wing adjuster in my Fantasy. I use the slotted plywood plate and screw on the wing adjuster. After I rough align the wings, I epoxy the wing adjuster plywood plate to the fuse.

Picture #2 - This is an inside view of the wing bolts and wing adjusters from my Panacea. This shows the relative location of everything to the fuel tank and wing tube.

Picture #3 - This is a picture of the wing bolt and nylon wing nuts I use.

Picture #4 - This is the locating dimensions I used on my Panacea. I use the same locating dimensions from the wing tube centerline on my Eclipse.