So, I still hunt this noise from time to time.

I notice a rythmic vibration that can be seen in the side view mirrors. It's alway with the top up and it's always when it's windy.

I thought maybe the fin needed to be locked down because it wasn't all that snug, but I think my top is contributing to this sensation I can't seem to really track down.

Any thoughts on the top being a source of vibration over time, shaking the entire frame at 70mph plus.