Hi Cat302, welcome to the forum. I too will be interested is the responses to this issue. What I have done as an interim solution was to, using a template, cut a shape of rubber, to fit inside the steering column cowl and glued it along the edge.
I only did the top half.
I used rubber strip that is used at the bottom of up and over garage doors, as it was about the right depth and thick enough to hold its shape.
I covers the gap but not the most elegant of solutions.
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2011 Plus 4