I'm considering addung another rope clutch on the dog house. The deck is cored and I'd like to prepare it a la Don Casey's advice and over drill the holes, remove core surrounding and fill with epoxy to create a solid deck to mount the hardware. My question is about what epoxy to use. I'll be using WEST system. What hardner and filler should I use. I'm not real familiar with the product. Any advice or links to helpful literature on picking appropriate products?