Rudder assembly problem on Hobie Getaway

After years of sailing a Hobie 18, we reluctantly sold it (it was getting on in years and needed work) and simplified with a Getaway (still fun, but we miss the 18!). Anyway: does anyone have an idea of how to adjust the rudder assembly so that the fittings connecting the rudder arms to the tiller crossbar don't rub against and gouge the topside of the hulls? It seems like there should be more space between them.
You may want to post your question on the hobie forum. There is a category specifically for the Getaway and the Hobie tech (Matt Miller) is generally very good about answering questions.

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