Sorry for reply you late and thank you for your support.
KPTT was discuss with our production plant again about sorting of this part.
We need to inform you that our production was designed , we not need to sorting part at Japan.
Because this issue we can see by visual when we assembly , we can separate OK and NG part easily.
So, KPTT will not charge cost of sorting part at production plant to you.
For Q'ty of NG part at Japan we will confirm you again.
Currently we just found only 4 Pcs.