I just made a startling discovery...the distance between front and rear wing spars on the plan view is 27 in. On the full size wing rib drawing, the distance between spars is 26 5/8 in(I have them taped together correctly). I realized this after making all wing rib webs per the full size drawing. Can anyone verify this discrepancy with their drawings? Or am I viewing this in error? Any suggestions? Matt