I have the LRO 3/1 kit and I get that drive line vibration at take off. I know I need to shim the carrier bearing so I ordered the Zone Off road spacer kit. Question I have is how much do I need to drop it for a 1" rear block. The spacer is bigger than my rear block so I think that would be too much. They are polymer so I can cut them as short as I need to. Just looking for suggestions.