Duane,

The clamps are Vise Grip brand 18 SP's with 10" jaws. I used them alot in the body shop.

The next time I am going to leave the root rib completely loose until I have the wing tube and sleeve in place. Then I plan to slip the wing on the tube and fit the spars and leading and trailing edges to the fuselage before I slide the root rib into the wing.Then it's clamp and bolt the rib to the fuselage sides making sure that the guide pins are aligned properly, followed byglueing the rib to the spars and leading and trailing edges. That should get a fairly snug fit . And thanks for the heads up on the gap not being a problem in the first place. It is comforting to know that some gap is okay.