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Make a Charm Check with a difficulty of 8.
On a failure, the Dwarves will beat you up and throw you out to 180, with 1 less Endurance point, and you will never see the one-eyed dwarf again.
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A moderate success will lead them to kindly escort you back to 180 and invite you to return when you have more money.
For a complete success, the smugglers will take pity on you and let you pass to 343 in exchange for all your Coins, or some other item if you have no Coin left at all.