According to a new report published this afternoon, early Apple Watch production problems found that the Taptic Engine produced by supplier AAC Technologies back in February caused some watches to be scrapped or destroyed as a result. None of the defective Watches were shipped to customers.

The Wall Street Journal further reported that Apple's second supplier, Japan's Nidec Corp, didn't experience any problems in producing the part. Because of that, Apple has since reportedly moved most or all of its production of the Taptic Engine to Nidec. This is likely one of the key reasons behind the shipment slowdown for the initial Apple Watch orders. 

Even if the process goes smoothly, it may take several months for other factories to get up and running at full capacity. Foxconn isn't expected to start manufacturing the Apple Watch until late 2015 at the earliest.

Apple is on record stating that "Our team is working to fill orders as quickly as possible based on available supply and the order in which they were received. We know many customers are still facing long lead times and we appreciate their patience."

Any major new technology product, especially one in a new category, is going to experience some glitches with parts, supplier turnaround and extensive testing slowdowns that make sure that the quality of the product is maintained. For more on this, see the Wall Street Journal's full report here.

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