(BusaCruise @ Jan. 19 2007,20:46) take the bra off occasionally and wax the tank ... it just like anything else ...lazy people want to install and forget.
I just took off mine after being in place for more than a year .... no lines/marks/scratches of any kind ... and I know the buttons/buckles/zippers could have done a number on it.
I now use a full tank cover made by bagster.... it keeps my icon timax gloves from scratching anything.
just remove and wax once a month