Actually, JB0, the VF-25 doesn't come totally apart during the transformation. If you frame-by-frame the transformation sequence, you can see the swing bars that hold the front and rear fuselage together as well another piece that connects the mid-fuselage and legs to the front fuselage. The lighting makes them hard to see sometimes, but they are there. They're a bit easier to see in the second angle of the transformation sequence in the first episode.