Yeah, those keyserts do look a bit more rugged than the helicoils. I used helicoils;
http://www.onlycubcadets.net/forum/s...&postcount=168
Reading that part about using the brake cleaner to degrease prior to the brazing made me think of this post by Jeff in PA;
http://www.onlycubcadets.net/forum/s...166#post333166
Be safe.