Hi, i recently purchased two lignatone guitars. One, a full size classic and the other a 3/4 size spruce top. both are old but the wood is beautiful. i may have made an error in that the key/plugs for tuning were missing or bent, so i had them replaced at a local shop called Centaur guitar. These were $25.00 and $50.00 each which is pretty reasonable for a guitar. Can you tell me more about them? They are both Ligntone and Made in Czechoslovakia.