Hi guys, On my Takamine LTD '98 the top deck tends to become concave in the bridge area. According to this I need to use a too high bones for keep the action I use. But this is not good situation. One time local Luther checked the inside and made some to make the deck flat but after half of year the deck slowly returned to its concave state. Is it often thing with decks and what to do exactly with this? Trying make something inside another one time flatting deck? Or make a new more higher bridge? Or burn it all with gasoline? Thanks for any thoughts.