Since having the gas cap and using the bike for a a few hundred miles, it has developed a venting issue in the gas tank. See the thread here: http://www.yamahastarstryker.com/index.php/topic,7757.msg76331.html#msg76331
. To fix the problem, I had to remove the setup and revert to the OEM gas cap. Since reverting, the gas leak has gone away. You may have better luck, but by proceeding the same may happen to you.
This is a screw on Roland Sands cap. It actually doesn't lock anymore as a result, but for now that's something I'm okay living with. So far with 53 miles all highway at 80+mph,
there doesn't seem to be any venting issues. So far so good!