lol, don't worry about the rest of them - I've sorted all but the zephyrus now. All your ones in the upcoming MVP release are rock solid stable.
That said, the Zephyrus is currently too far gone for it to be so easily fixed, so we can't put it in the MVPs as is.
The use of transparent textures makes it far more difficult to repair than your other HTL stuff, and as such I know I would just end up practically rebuilding it from scratch.
Basically there are a lot of places with impossible geometry - mainly around the interior of the transparent textures and where that interior meets the hull as it's kinda like having parts of the hull volume sectioned off by polys. This makes it very unstable, because 3d apps just can't figure it out. Would it be possible to turn the transparent texture stuff into actual geometry as you did with the faustus, and also map it out onto one big texture? It currently uses a total of like 43 individual map files when the shine, glow, normal and height maps are counted. :\
Also, don't be afraid to add a lot more detail, as it seems you didn't add very much external greebles or anything to the original model.
Axem: Fine you win! I shall call them HTL optimised, abreviate it to HTLO, and then chop off the O because it makes it look like a retarded version of Y HALO THAR.