.5 hr grinding down the rib to allow a rivet in the top skin.  Waiting until tomorrow to start the re-test of the right tank to allow the sealant to sufficiently set.

A shortened rivet now fits.

NEXT TASKS:

1. Retest right tank on Wednesday.
2. Bolt fuel tank on.
3. Top skins riveted on.
4. Leading edge riveted on. 
5. Fuel tank riveted on.
6. Fill rivets (use filler this time).
7. Wing tip assembly and light installation.
8. Rivet the one on the left wing's step rib that needs special handling (waiting to hear back from the factory on what to do with that hole).
9. Finish one of the composite tips of the elevator.
10. Fill rivets of elevator.
11. START ON FUSELAGE!