Again - how far are you filling it!!
There is over 2lts still to go when the fuel hits the base of the filler neck.
Also - wring it's neck and 80-90 miles will see the fuel light.
Cruise/commute and 130+ is easy
Yes, I was amazed when I mate showed me. You fill it up to the base of the filler neck, and he was like "Just keep going", so you put some more in, it goes half way up the filler neck, then goes down, so you do it again, and again, and again, and easily 2+litres extra go in there! (Just remember to ride the thing afterwards as I filled it as much as I could, then we went to restaurant over the road and I left the bike on the side-stand and when I got back a load had seeped out of the overflow
)
Motorway riding to/from the alps I was seeing 150 miles just as the warning light came on, so could've probably squeezed nearly 200 miles out of a (completely filled) tank, and that was sat at around 85-90mph