I have the same issue too and can’t seem to find a cause. The dealership said they can hear it but they can’t find a cause either, just that some tops have more noise than others.
Not sure if your supposed too but the dealership actually changed my tops for me and they left them on. I was actually wondering if I needed to take the hardtop back off and remove them or not. But so far there has been no issue with them being on.