Dip fillet in milk, then bread crumbs. Place on sheet of aluminum foil (enough to make a tent around fillet). Sprinkle with fresh lemon juice. Sprinkle heavy with lemon-pepper and seasoning salt. Dot with butter. Fold up tin foil to make a tent and poke holes in the side for vents. Place on grill and cook about 10 minutes or until fish flakes when tested with a fork.