Hi all , Im new to this petrol model . I’ve just fuelled it up and it ran great for about 5 minutes but then it seemed to sort of struggle to go , so I took the body off to see what the problem might be . There was quite a lot of fuel coming out of the black rubber cap on the fuel tank where the fuel line & breather pipe enter. This cant be right ? Do I need a new tank or can I buy this rubber grommet anywhere ? Thanks