This is not a manufacturer issue, per se. It is a supplier quality control issue. I have run into this myself with the few products I make. And I'm sure others have as well.
It is not uncommon these days to spec out and receive pre-production product for testing, etc., that are exactly what you ordered and high quality. Then you go into production and a parts supplier somewhere along the line is not so careful with train car loads of product as they were with the few samples produced in the beginning. It is a HUGE headache because, though there may only be a relative few 'Bad' parts. You don't know which ones they are. So you go into semi-panic mode and big time damage control with customer perception. Especially with safety related issues.
Of course it all comes back to the manufacturer, as it should, so my opening statement is a technicality which will do Polaris little good. But this explains how an otherwise good company can sell a poor product at times.