Originally Posted by markk900
Funny, Acerbis has been making these tanks for years but continues to neglect to post the installation instructions online.
If its flopping around at front are you sure you have the two rubber donuts with standoffs in the right place? The standoffs screw on the end of the upper frame mount bolts (the exposed thread portion), and then the donuts go on the ends of the standoffs. These are what hold the front of the tank so its possible yours are missing, loose, or not aligned with the slots in the tank.
Here is some info from earlier posts: