I have a Crane Criterion toilet which I cannot find a seat to fit. The bowl itself dips ergonomically downward, but this means that the flat toilet seats in the stores don't quite work. Specifically, they snap in half from the stress of supporting all of a person's weight on the very tip and rear of the seat. This hasn't happened while I use it, because I'm a rather small person, but it's very distressing when it happens to visitors. Additionally, modern hardware doesn't work with my toilet, so I have to drill new holes into seats to fit the original hardware. I'm thinking of somehow attaching thick rubber bumpers to the underside of the seat to make contact with the bowl and better distribute weight when someone is using the toilet. I've also tried to find the "saddle seats" to fit this toilet, but they don't seem to exist anymore. Any thoughts?