I TOOK APART A QJET AND THE INSIDE WAS PACKED WITH WHITE POWDER RESIDUE. AFTER INITIAL CLEANING WITH GASOLINE AND DRYING, SPRAYED WITH BRAKE CLEANER, THEN CLEANED IN ULTRASONIC CLEANER. I STILL HAD TO BRUSH AND CLEAN EXTENSIVELY. IS THERE ANYTHING THAT DISOLVES THIS STUFF IN ONE SHOT? I'M STUMPED THE CASTING IS EVEN CORRODED WHERE THIS STUFF WAS SITTING!!!