Foothill Ranch-based aluminum products maker Kaiser Aluminum Corp. fell short of Wall Street's third-quarter profit expectation while topping what analysts were expecting on revenue. The company, which shapes aluminum into custom pieces for the defense, aviation and auto industries, reported a quarterly profit of $6 million, flat with a year earlier and short of the $8 million expected on average by analysts. The company blamed higher costs from major maintenance projects at its plants and production delays at a new Kalamazoo, Mich., plant that's still getting up to speed, according to Chief Executive Jack A. Hockema. Sales came in at $263 million, up 4% from a year earlier and topping the $259 million expected by Wall Street. Investors seized on the profit shortfall and tepid words about the fourth quarter, sending Kaiser's shares closed down about 2% on a market value of about $850 million.