MEW YORK, Aug. 29 (AP)?ÛÓIn another sluggish pre-Labor Day session the stock market took a slight loss as turnover quieted.</br></br>Once again, there was nothing in the news to spur a resumption of the ?ÛÏsummer rally?Û? and Wall Streeters were sitting on their hands, waiting for some clue as to how things will shape up after the long Labor Day weekend.</br></br>The most interesting thing to technicians was that the market found support after drifting down close to the psychologically. important 600 level in the Dow Jones industrial average.</br></br>It was a lower market all day, but stocks were cutting their losses nicely until the final half hour, when they began to soften once again.</br></br>The Wall Street atmosphere was not brightened by Wheeling Steel?Ûªs reduction in dividend to 25 cents a share from 50 cents. The company?Ûªs chairman mentioned the ?ÛÏcost-price squeeze?Û? as one of the