Thanks everyone for the responses. It is good to know that mine was a one off and not a major issue. I have the Prodigy as well, same issue, fixed it myself with springs.
Curious to know if anyone else had an issue with the new Kuna. 19 rounds in to mine and the cartridge ejector or extractor went flying down range and a spring and pin fell on the bench. I returned it to SA via RMA almost 3 weeks ago now. Still waiting for it's return.