They are so expensive, and it seems a bit high risk to me. I got some great info off a guy from Offset guitars, theyre really knowledgable and helpful ( ta Jan ) , one of which being heavier guage strings, so thats what i did ( 13's ) and it mysteriously has sorted the problem, for now. Also i gave Dave Cherry ( cherry guitars ) a bell and he wreckoned if i coudnt sort it he'd be able to do so, no problems.