Leave it be. Tom at JBP will be the first to tell you you can get very respectible results from a Jacuzzi WJ. Have one boat being worked on right now with a WJ, and just bought another. Other two running boats and the remaining 3 are Berk's, but hey? who's counting?

Racing, etc, or just looking for max performance, Berkeley IS going to outshine the Jacuzzi. But in those circles, I think you really need to look at AT as well. JMO.
Ray