My one started playing up yesterday, the bikes only done 7,500 miles (2012 GSA). Showing 78 mile range after filling the tank to the brim. It's still under warrantee, but I don't know if I can be arsed to take it in if it's only going to shortly break again. I always use the trip meter for judging fuel stops.
but you havnt got a fuel strip type guage,in your bike is the much more reliable float system
thanks for the heads up.