David o: It might be worth your time to take the guitar to a luthier and have it checked out. The strings (.010-.047) are pretty light. If your guitar has been sitting in the case for a decade it may have dried enough to cause damage that is hard to see. Internet forums are nice and all but somone who knows what s/he's about will let you know the shape your 12 is in. To do that, the luthier needs to examine the machine.