We are looking at purchasing a log home. It is 16 years old and has been well taken care. We have one concern. In the dining area one of the wall tie beams. ( i believe that is what they are called). There is one coming in from both sides and three from the roof that all tie together with a steel plate. One of the beams is warped. It has a arch to it. Is that something to be concerned about? Does it need to be repaired? Is it an expensive repair if it needs addressed?