We've done one recent Mossman neck reset
and it turned out great. But they changed designs a few times and we now have two earlier model Mossmans [Mossmen?] here for the same work which have a very unusual head block and brace design above the soundhole. If you're familiar with Mossman, you'll know what I'm referring to.If you aren't familiar, I've added a photo looking through the sound hole at an inspection mirror.
Or this may help. When we were getting ready to do the first job, we found this very impressive discussion of the same repair
by George at Phoenix Guitar Company which illustrates that unusual design. There are two 'fingers' protruding from the headblock. Then there are two braces which get very thin at the center and pass through those fingers. He felt that the bracing was inadequate in the area above the sound hole, so he added a bigger brace - which you'll see from his photos is easier said than done on these guitars.
I'm considering taking the same approach, but the tops of both guitars show none of the usual signs of being badly or under- braced and really appear to be in good shape. On the other hand, the neck was WAY under set - not just a little. So my question is this: would you
add that additional brace too or leave it alone and just reset the neck. I don't want it to come back in a year needing another reset, but also don't want to make any major changes to a 35 year old guitar if I can help it.