I noticed some fraying on the brake cable so I wound up replacing it with a NOS one. Upon adjusting the front brake to the proper tension (which I didn't do last week), I found the brake arm to be fairly useless under pressure. Took apart the brake arm and realized the square hole that connects to the drum looked more like a pentagon. Figured the best option at the moment would be to weld a little bead on the rounded out sections and then file it down. The job probably would have been a lot faster if I had a dremel, but instead I had to use a drill and the smallest file in my tool box to somewhat square it off again. This is what I ended up with.
It's not square per se, but it does work, and more importantly it'll do the job while I search for a new replacement. It amazes me that what should be 5 minute jobs on this bike keep turning into 2 hour jobs because I keep finding something else wrong.
I'm still waiting for the gas tank to come back from powdercoat and that's holding up a lot of things, namely seat mounting (and possibly more fabrication) and carb tuning, but I suppose you can't rush quality. Since I haven't found any oil or gas leaks after reassembling the top end and running the engine briefly, I figured I'd finally mount the front fender.
I still have to knock out welding up a new battery tray, that'd be a good little job while I wait for the tank to come back.