Over time the daimyō debts accumulated so that sometimes the crop of several years ahead of time was mortgaged, and when the crop was delivered the interest charges alone could barely be defrayed. Daimyō were then tempted to default and switch to other warehouse merchants or sell the crop themselves, through their agents, on the free market. The kuramoto secured themselves by jointly refusing the handling of goods from the daimyō who had avoided paying their debts.