glennn56 said:
I can't find the exact post but someone mentioned that on GF60's the tops hump up behind the bridge.Kim Walker used forward shifted bracing on these guitars similar to pre-war acoustic guitars.You can see the "V" part of the bracing very close to the sound hole.With this being said,the spruce top has less support behind the bridge.I emailed Kim Walker and I told him I was using medium strings.He told me the "humping" was nothing to worry about but just to keep an eye on it.He also suggested if I was concerned switch to medium/lights.The D'Addario J24's work very well...
Glenn
http://www.reverbnation.com/glennfr
My luthier told me the top was very thin on my Walker D60.
It helps to create great tone. But it causes problems too.
This year, he noticed a slight dip in the sound hole on the treble side.
I hadn't noticed it before. Nobody had noticed it.
He did some beautiful work getting it right.
First, he made it straight again, I'm not sure how.
Then he carved a very thin, round brace, the circumference
of the sound-hole and glued it into place.
Fabulous work. It cost me $50 and I gave him a $50 tip.
I've poured a lot of money into this guitar. But it's finally getting
to where I want it. Action is fast. The tone has always been fine.