Reading online, others had removed the spare tab off the flap ribs by using either metal snips or a dremel cutoff disk. I ended up using metal snips, and then a needle file to smooth off the cut surface. I then assembled all of these flap ribs to the flap spar and attach the upper and lower skins in place using clecos, just so that some additional match drilling could be done. I fitted the appropriate AN-bolt through the flap hinges to align them, clamped them together, and match-drilled through 3 of the 4 holes without problem (I'll have to do the last 1 hole in each hinge after I remove those pieces off the spar again, due to clearance issues with my drill). Unfortunately, one of the parts that was backordered when my wing kit shipped was the triangular aluminum extrusion VA-140 used on the trailing edges of these flaps. So I'll have to skip over some of the steps and come back to them later. What's next? I need to next decide how I intend to bend the edges of the nose skin, before I can attach it and do more match drilling. Cleaveland Tools included an edge/seaming tool, but that might not be the best thing to use here. Other people talked about using a piece of wood with a slot cut in it. I'll have to do some more research. But it's nice to see how rigid this flap is after just a few clecos holding things together.