Hi Lang, so really I'd recommend getting that surface to be a precise cone, right now it's some kind of thing 98% close to being a cone by not quite - if you get it to be an exact cone then you can set the cplane and use array circular to get the pattern you need same as described here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=5153.2

- Michael