Sprayed DyeChem on the aft brackets and layed them out on the fuselage sides with the aft brackets. I used hot melt glue to hold the aft brackets in position. I put the 1/2 inch ream in the forward brackets and used that to spot the location of the FWD brackets along with my 6.9 inch spacer board. Once the aft brackets were spotted in position I use hot melt glue to fix them in position. Then I scribed the backside of the FWD brackets to mark the location of the lower longeron and the LWY wood. Once those were marked I removed the brackets and cut near the scribe lines with my table saw.