as i was in process of building a few more V4's i noticed the rest of my available flex PCBs had a critical flaw from the manufacturer.
All other v4 PCBs which have already been shipped out (or awaiting shipment) were fully functional and did not contain this flaw.
I found a total of 3 in this condition....the last 3.
I will make a few design changes to add additional space width between traces and thicker traces to compensate for the manufacturer's shortcomings. These design enhancements will delay present and future (if future) orders of v4. I have not yet decided if i will continue the v4 product line due to the length of time to assemble.
as ive indicated before, previous v4's already shipped (or waiting to be shipped) are free of any defect and ready for use as intended.