monstaman

Hi,
After many years of Jap bikes and more recently, Triumphs, I have bought a Monster 996.

Love the bike , ( so does er indoors, its big, black and throbs!!)but would appreciate help on a couple of issues.

When fuelling, in spite of following info in manual about keeping level well below top, fuel is overflowing from overfill pipe.

I am putting plastic plug in pipe when I refuel, but is this likely to cause any other knock on effects.?

I am struggling to get 85 mile before fuel light comes on ( running in, so not nailing it). How far can I go on warning light?