For some (expensive!) Keramag toilets the screws and dowels are too long, because the holes do not go deep enough. Unfortunately to fix only by tinkering solution: about 1cm shorter screws umd from anchors only the lower part with screw thread use. To "concrete" use eg Quick Steel epoxy. It screws slightly (!) Grease to prevent sticking. After curing sits the rock solid. The fit is not 100%, but still very presentable, and in my opinion is more beautiful and more hygienic than the original, which tell me in 8 years and write broken 3x. Therefore, only one point deduction wg. the DIY solution!
