Finished floors. Made brackets first to support the strobe power supply, then bolted it on. Finished by riveting floor. Found out Hartwell latch interferes with power supply top - arghh! Too much work making and installing the brackets, so I drilled out the latch and will likely just screw the lid down or put velcro. It really doesn't matter as carpet will cover all this... . Last, went and riveted the F-706 and 707 gusset plates.
Made these support brackets for strobe p/s. Left bare area for good grounding.Tail strobe wire above.