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My power antenna had been bent at one time and wasn't fully retracting. I decided to replace it with a much simpler unit.
This was not a simple job and took most of my morning, but turned out OK in the end. I was able to re-purpose the neoprene collar that fits the contour of the fender. You'll need to move the inner fender liner for the right, front fender to access the power antenna and this will require replacing some plastic fasteners as they seem to be single-use. If you live in the rust belt and have cladding, the bolts that fasten the cladding and liner to the fender may also need to be replaced.
I found a few vids on Youtube that proved to be helpful.