The OP says he has a 2010 R1200GSA. The bike has a float in the tank and is a lot more reliable.
My 2010 R1200GS was manufactured in July of 2010 and I purchased the bike in Feb of 2011. 35000K's so far and no problems.
You can hear the float moving around inside of the tank when the fuel level gets a bit lower.
Tassie, where two heads are better than one.