I have a Pancordion Crucianelli made in 1954. I never had problems with it and always kept it in the case against an interior wall in an interior room (in an Excelsior case). Suddenly, I have found 5 reeds that do not respond or respond incorrectly. Where can I get it repaired? I live in Killeen, Texas and wish to continue to play and give a lesson or two. (I have been playing since I was 6 years old and studied under 12 years with George Carras, 2 lessons with Magnante and 1 lesson with M. Floren). Please help. Thanks.