Customs may allow u to pass through with little kopi money, depending on situation. Of course you must know one customs officer la. But the prob is when u wanna cross the border, or i shud say the customs compound guard house. There are a team of police there. Customs warehouse is not the border, the actual border is the police guard house outside. If the police dun let, they will ask u to bring it back into the warehouse n surrender to customs.