2 years of college in manufacturing processes which includes quality control. It seems the previous manufacturer did not get a great grade. If it was a DIY kit, you should have been made aware of it prior to purchase.
I could design and machine precision dies and run it through my press but it would be a few hundred dollars.
There seems to already be an adequate number of reasonable quality cable makers. That is what I would pursue...
We need to know where that one came from (brand and supplier) so we can avoid those.