Another great thread! I have BFB's and have tried everything to reduce the vibration at road speed, 50-70 MPH. Lowering tire pressure seems to work. If I go down to 15-18 PSI The vibration thru the steering wheel is much reduced. ERA says 25 PSI for front and rear is a good place to start.
I know there are Cobra drivers that think this is a boring thread but threads like this is all that keeps me coming back. We all know there are quirks that have to be addressed when you have a Cobra.
Learning what problems others have had and how they resolved them is very helpful.