Duct taped the right wingtip into position this morning and proceeded to drill out the top half at pilot hole size. When finished, I raised the wing up high enough to be able to drill out the bottom half of the wingtip. Once everything was drilled out at pilot hole size, I updrilled the wingtip to final A4 rivet size.
After drilling, I removed the wingtip and cut off the excess material at the aft end of the part.
Top half of the wingtip with pilot hole sized clecos in place.
After drilling and then up drilling the bottom half. I also drill out the three aft rivet holes.