I don't see it and certainly can't feel it. Just have to take your word on it.
Looks like the checker board have grain in all the squares going the same direction. Are they all sawn in same orientation? i.e. all quarter sawn or all flat sawn? If mixed that could be the problem.
Looks like the checker board have grain in all the squares going the same direction. Are they all sawn in same orientation? i.e. all quarter sawn or all flat sawn? If mixed that could be the problem.