I have started wing spar assembly on serial no.67 , The spars and fittings are Cadd based , water jet cut. and match drilled. Additionally I have a set of the hydroformed ribs. Looking at the assembly I have question regarding the tip ribs, I'm assuming the spar / flange opening in the rib has to be enlarged/ removed in order to slip onto the tapered spars. The other option would be to leave the spar blanks straight until the tip rib installation process. That seems cumbersome to me. I'm leaning to enlarging the rib opening to facilitate rib placement , then riveting in a closure piece . How have the rest of you addressed this? I often miss the forest for the trees so I have learned to ask...thanks Tom