Hi Kingsley Since we don´t yet have a procedure for data collection of yield, rework and retest, we would appreciate that You collect these data and inform us as soon as possible. We need to know this: 1. Rework – what has been replaced or other description of how the fault was corrected2. Retest – why and how many times.3. Yield In order to improve our yield (if necessary) and ensure low production cost, we need to know the above so we can take action and get the design optimized. And if You see any general errors on the boards, let us know asap. Thanks Best regards,Caspar Bjerkhof