I guess those bolts are kind of funny looking anyway... I don't have a new one...

I had to refurbish my slave cylinder this summer, I took this picture when
I was done...

And your picture:

It is a bummer to have to release all the fluid by taking that back off,
but if it is leaking there, that's where the problem is. Like meathead
mentioned, a bit of grit, some kind of burr, something right there. I feel
like I have to really tighten down on banjo bolts to prevent leaks... I
have copper crush washers because that's what NAPA had to sell me.
Are you sure it is leaking there and not running to there from someplace
else?
-Mike