The steel upper left handle bar bolt came out with aluminum in its threads. I should have used anti seize compound when I switched my bars. I've gone back to RE stock bars. I tried filling the lower part of the bolt hole with an AB plastic epoxy, that can be threaded. I couldn't get it to thread so well.
I had to do it...
I went with an M12 x 1.50 thread into the upper aluminum. My local hardware had the bolt, but I had to shorten it. I used two washers to shorten the length. I used anti seize this time.
It's different, but the bars will stay on.