There are a few things that may or may not apply. I see a lot of razors that have a little less on that last 5-10mm at the toe with a tiny swoop up. I think that some are that way on purpose as they tend to bite less. It is easy to make it that way with a little J hook at the end to the stoke. That same little J hook is a good way to hone it as well, however it is a slippery slope because you can easily wind up creating some impossible geometry problems at the same time. As already stated the rolling X. The edge of that blade must not be straight and it likely has that little smirk by the toe. The marker test is a good way to tell when your stroke makes full contact. The trick is finding the right modification of your stroke for that razor.