Today, I installed both left and right flaps. The pins seemed very tight, so I removed them and ran a scotchbrite pad over them. Then, I slicked them up with some BoeLube and inserted the pins. I secured the left side with a pair of hinge eyelets secured by a screw into a nutplate. As I was removing the hinge pin retainer on the right side, I dropped it and it fell thru a lightening hole in the flap spar. Dang it—and I don’t have a grabber thingie at the hangar to retrieve it. That will be on tomorrows “to do” list as well as connecting up the flap pushrods.