Found a great place for RAM mounts and accessories, they have EVERYTHING you need and many items you nevre knew existed. Best thing is the pricing, one item I need was 14.99 at Cabelas, they had the same unit for under 5.00. They have 5 different height pedestal mounts (from 1.5" to 5.5") all differents size ball, etc.
Most importantly they know the answers to all your questions too.