Tesla Inc. (TSLA) shareholders pay attention to CEO Elon Musk's every word, and that attention to detail has led Monday to the stock's 3.5% decline to $323.38.

As TheStreet first reported, Musk commented that the company's new Model 3, which had over 500,000 advance reservations, was difficult to build ahead of the unveiling of the vehicle on Friday. 

"We're going to go through at least six months of manufacturing hell," Musk said at Friday's event. 

Lack of deliveries has been a constant bugaboo for the company, whose stock price has experienced a meteoric rise in recent years. 

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