Im glad that worked for yours... Mine were also 1/2" off but they were centered on the blocks..
I mounted the cabanes to the wing and mounted the wings to the struts. then drilled the cabane holes..Mine were 1/2" back from where they were supposed to be.. I also had trouble with the lower wing saddle. The wing would not sit in it properly so I had to grind the dowel holes so it would lay flat in the saddle... Im glad it looks nice finished because I did not have a great time assembling it...[:@]
Later,
Frank