Most of the new good setups you can buy have silicone flat washers on the outside as well as the inside. Put some on the outside and give that a try.
Primary #1: Hoppy LAN Party DIPA (>100 IBUs)
Primary #2: Irish Red
Primary #3: Belgian Trappist Pumpkin Ale
Bottle/Kegged: Belgium Dubbel Blonde, Centennial Honey Blonde, Throwdown Oatmeal Stout, Throwdown Milk Stout, Festabrew Czech Pilsner, Hard Sparking cider On Deck: Varroa's Wee Scottish Heavy, hard sparkling cider