Yesterday my order from Enco came. Here's one of the snappy little squares I ordered. Got a set of four in a plastic case for $15. Sadly they're made in China, but I'm not willing to pay $83 for the same set by Brown & Sharpe.

Anyway, I spent a couple hours this evening fabricating the doublers (the bottom ones) for the F-707 bulkhead. Next task is to fabricate some brackets which will be used to tie the stiffeners into the F-705 bulkhead. I'll work on that some tomorrow.