Hi, I'm a little confused as to what the rules are. I like to sit on my bike while filling as I can see the fuel level being flat rather than slanted if tilted on a stand. Happened to me twice already, After the first time I thought it was because you had to remove your helmet. Today the nice lady at the cashier tells me its because if I spill petrol on my clothes and someone flicks a cigarette then I'm toast. Anyone else experiencing this? Is this the case? or shall I just go fill up elsewhere.