SAN FRANCISCO, United States (AFP) — World-famous guitar maker Gibson, whose instruments have been played by the likes of John Lennon and Elvis Presley, is facing serious financial problems that threaten its very existence. The mythical company — in Nashville, Tennessee since 1894 — on Monday brought in a new financial director, Benson Woo, to try to rescue the ailing group. Gibson Brands, which also sells audio systems for both professionals and the general public, […]