American Axle Cuts 2004 Earnings Forecast  CHICAGO (Reuters) - American Axle   Manufacturing Holdings  Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=AXL.N target=/stocks/quickinfo/fullquote"&gt;AXL.N&lt;/A&gt;, an auto parts supplier, on Thursday cut its 2004  earnings forecast, citing planned production cuts by its  customers and higher raw material costs.