Here is a trick I figured out while trying to mount the tank on my bike. My bike has exposed cables on top of the top tube, so I cut a small peice of 1/8"x 3/4" strip steel, drilled it for the tank mounting studs, and then slipped it under the cables. This lets the cables run through the cutout in the tank without binding up. The tank is then tightened down normally once the strip steel is in place.
http://www.piratepathy.com/misc/motoredbike_23.jpg
Hope this helps someone!
http://www.piratepathy.com/misc/motoredbike_23.jpg
Hope this helps someone!