Finished up deburring all of the parts except the skins. I wanted to do some general clean-up before taking on the skins so I moved on to dimpling and pretty much got that knocked out. Had a big oops moment dimpling the 1012A bulkhead. The 12A mates back-to-back with the 12B. Both are dimpled on the web with the flush side on the 12B. Well, I thought I was dimpling the12B when in fact I was dimpling the 12A. So I ended up dimlpling the wrong side--Doohhh! Well, based on comments that I read on the web about similar instances, I was OK in reversing the dimples one time so that's what I did with no apparant issues.