Mitsubishi dealers are pushing used-car sales following a June sales slide of 45.7 percent from year-ago new car levels. All Mitsubishi 2004 models slipped in sales last month, except the Montero Sport. The Japanese automaker expects sales to fall through March 2005 followed by a recovery in the next fiscal year. Meanwhile, a job cut of 10 percent is threatened at the automaker’s Normal, IL plant.