1.7 hrs
Clecoed left tank to spar, again.

Drilled attach brackets to 3/16. Afterwards, realized I should go one number smaller on these, and use the reamer I bought to bring them up to 3/16.

Drilled the 919 tank/attach strip holes. Went right for the #19, since these will be #8 screws.

Measured the wing twist again. It's less than 1/16 inch, well less than the tolerance spec'd in the manual.

Removed the tank from the spar, and cleaned up. It's not mentioned, but I spend a lot of time cleaning up shavings, and putting away tools.
Started match drilling the tank assembly. Leaving the tank attach brackets on till last (there are two more holes to match drill) since they hold the ribs in final alignment.

There's a bunch of plumbing and capacitive fuel sender work to get ready. After that is final tank prep and the evil goo. That may happen over the Thanksgiving break.