Just so I understand this correctly. You can pit in with the F1 Modern and re-fuel but the F1 Classic and the F3 you are unable to pit because you can't re-fuel. If I try to pit with F3 or Classic it takes away my fuel and I'm back to 1 litre and my engine is now overheating. Can not re-fuel F1 Classic or F3....Why?? Cheers!