Having started with lower left and lower right (driving) ailerons I have now got the ribs glued to leading and trailing edges and now started fibreglassing to aileron spar.
The centre two ribs are close together and make up the primary hinge point which is underslung.
This aileron is then offered repeatedly (lost track of how many 100’s of times I have done this !) to make sure it sits squarly and centrally in the wing slot.
Jersey Sherwood Ranger 
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