A former southwestern Illinois judge at the center of a courthouse drug scandal soon could hear his punishment on federal gun and heroin charges.  Michael Cook is to appear for a scheduled sentencing Friday in federal court in East Saint Louis.  That’s where U.S. District Judge Joe Billy McDade rejected a plea deal the former Saint Clair County judge had reached with prosecutors.  McDade called the proposed 18-month prison term too lenient.  McDade at that time delayed proceedings for a month, giving both sides time to negotiate a stiffer prison sentence for him to consider.  Cook still has the right to withdraw his November guilty plea and request a trial.  Cook resigned last year after being accused of heroin possession and illegally having a firearm.