I fully understand, please keep colleagues to inform about our statement below: This issue has no primary affect the function now, but during using(manipulation) by customer, burrs can release to application/assembly and result in fault/malfunction and raised customer´ s complaint! There is a potential risk here and we cannot rule out or avoid this risk in future!Due to this we can not accept any concession from our side and collect NOK part to return to you! We thank you to manage and implement actions to avoid in next delivery batch but we have more parts here(raising from 730 to 1150) and outher parts are in HUB storage (about 1200pcs)How do you plan to verify and check this HUB stock here in CZ??? We have found that failure rate is more than 50%! Let me suggest option to speed up this case ….we could provide checking by our sources to find all NOK parst on HUB stock, this extra cost will be accept by us and not requested to cover by credit note, on the other hand, we ask for confirmation of the guarantee that all NOK pieces will be accepted and receive approval to returned by you.