Carbonator Replacement Procon Pump

Have used Procons for over 30 years. Not sure whats up but this particular pump didn't last a month. The only reason Procons typically go bad is if they are run dry which this one was not. I will say this pump sounded funny from day one. Not sure if it was a mfg defect or it was a refurbished pump? Waiting on warranty inquiry. So far no response.