I purchased a used set Koni sa with no instructions. I have already dis-assenbled the front spring/de-carbon units carefully marking the shock and spring assembly for install. What parts do I re-use from the original 94 front shocks? Do I re-use the original dust cover and the brass color piece that fits onto the top of the de cabon shock? Had to purchase upper shock mounts and biscuit. The koni's came with the hat, nut that locks the hat, a rubber washer (approx 2ins in dia) and the top nut. Am I missing anything. Thanks in advance