Gundam Wall Mounting Platform

This model was designed with using thumb tacks in mind. Someone else had already designed a similar wall mounting system, but only had the version where the mounting point for the gundam stuck up under the model. This is a platform to hold the feet in. An issue i have seen in my two prints is that there is a gap between the platform and edge, but it is small. It is not in the 3d model, just the printouts for whatever reason.