For dertbikedennis... what is that plastic bit hanging at the rear of the tank's purpose? Also, what did you have to do to remove the nacelle from the tank or is that a BA tank? It looks MUCH better without the chrome nacelle. Last, how is the seat mounted... the pics don't make this clear? When you say you are adding springs, maybe a close up of the mount would help. Thanks... probably one of the best looking BAs I have seen.