Brazing might work, but I'm a hack when it comes to gas welding work
I used the torch to cut out those gussets up by the joints under the seat, and cleaned them up as best as I could with the grinder and a flap disc. Not perfect, but looks much cleaner.
I may try to get a smaller air driven grinder so that I can get in a bit tighter. Also got a few of the other welds smoothed out on
I don't want to mess with the bracing around the swingarm mount. They're not pretty, but I'm hoping they'll sort of disappear once the bike is back together.
Have a friend who is much better at welding than I am, so I'll take it by his place and see if he can fill in any of those spots. Even as it stands now, it looks much better than it did stock.
Oh, I also gave up and just cut that bracket off, so whatever it was for, I guess I won't be using it