Another one who stumbled upon this post seeking info on an FG 335...
I was recently given this guitar by a family member who purchased it back in 1977. The guitar was in decent condition and had apparently been stashed away for decades—the case practically disintegrated when opening it, tuners frozen up etc. it was definitely in need of work.
I took it on as a project replacing the tuners with Grover vintage open backs, installed a K&K mini pickup in the bridge and bought a new Yamaha case. I then took it to the guitar tech for setup and strings. He did the best he could to avoid a full neck reset. The action is still a little high after the 8th fret but overall sounds nice. I ended up investing about $200 and debating on taking it back for a reset.
