I would love to shred with you any time Mike, I hope you know I am not mad at all at you or anyone else in this. I just watched both threads for a while and felt a very unbalanced and unfair picture of things was being painted to Lim's detriment, so pointed out the obvious to anyone who works professionally in the industry. I think Valarc said the same thing just in fewer words. A retailer should never be making his actions to take care of his customer dependent on a manufacturer. If he does then his own customer service is lousy.
To answer your question Steve- and what then? I have seen several things done at that point done. The easiest is to put a cap on the outlet side, and a cap on the suction side, put some positive pressure on it (a nitrogen tank works for that) and see where the water squirts out. The problem with vacuum testing is finding the leak. It tells you there is one, but where is entirely another matter. If no leak does appear you still have a wet end problem or a broken shaft, both of which mean pump replacement.
As for the dueling thing, sounds like fun stan, but only people with defective hearts and warped minds like nazis think there is a gene pool problem that needs cleaning.
Also, thanks to elliot for coming on here to apologize for the customer's inconvenience, and telling us more about their company and it's learning curve. All it takes is a tired operator or failing equipment to make the deformity occur, or even a bad batch of plastic mix and materials supplied to Waterway.
So let's all be nice now, enjoy our koi tonite, and shred waves all weekend ok?