In November 1730 (Kyōhō 15), the golden "shachi" were recast for the first time and covered in wire mesh. In 1752 (Hōreki 2), the large-scale "Restoration of Hōreki" corrected the tilt of the keep, caused by unequal subsidence of its stone wall, and the roofs from the second level upward were tiled with copper. By 1788 (Tenmei 8), the accumulated debt of the Owari branch since 1767 (Meiwa 4) amounted to 215,000 ryō. As a result, the golden "shachi" had to be melted down and recast with less gold in 1827 (Bunsei 10). A finer wire mesh covered the "shachi" to hide the fact that they were less golden. In 1846 (Kōka 3), they were again melted down and recast for a third time.