Thanks, good to know. That would be unacceptable for me. Part of the reason that I bought the F6 is for the great sounding stereo.
I've settled with two shields. I use a Tulsa Tall for very long trips. I use a 16" Clearview most of the time. The Clearview does have turbulence at highway speeds. I added a sort of "xscreen" to help with that.
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