There is another wing jig on the RCM site at http://www.rcmmagazine.com/issues/re...tjw8ZYfk00R4c1 then scroll down until you find Wing Jig Mark2

I have used one of the features of this jig. The top cramp has a notch at the LE to retain one of the rods, the TE is left un-notched to allow any size ribs. All the support blocks are therefore the same thickness, which is easier than notching all tthese lower blocks!
This photo shows this more clearly. and if you compare it with the previous photo you can see the TE rod is moved further in but the LE rod is still located in the notch.