Forte has a Aluminum Tornado section (teardrop) that they ground the mast track off, and now use that as a inside mandrel for a teardrop rotating mast. Take an old style T mast and add your dimensions on that. They can do longer than the T mast by moving the mandrel and doing multiple passes on the weaver machine (I have no idea the real name is)
Not sure if thats what they did for Charlie.
Bill
