Short Sunderland 1/72 scale - the frames with tiny parts

We are continuously working on the 1/72 Short Sunderland model. At present, we are injecting one of the frames with tiny parts.
In fact, those parts are not so tiny, some of the floor parts are longer than a single-engined model in this scale.
Note also there are no ejector pin marks visible on the face side of these parts.