I just installed the Gorilla 3000 on my 06 - 500. I bought the honda 500 mount from ebay gorilla site as well. I had the same problems. I took an angle grinder and ground off a little on the inside of each rear tab. It slipped right in. As said before with the front u-bolts tight and the rear down all the way, the winch connectors are abut 1/4 inch from the brace. AND like mentioned above, the short wires go to the winch and Long to the battery. Typo in the instructions.