Alpha Z-stacking order problem

[chiyaniwatori]

I've got a model which uses metal bars with holes in them (Erector set bars). However, using a transparent texture causes the bars to render beneath the other, opaque parts of the model. Escher might like it, but it doesn't work for me.
http://i15.photobucket.com/albums/a362/Chiyaniwatori/zStacking.jpg should clarify. My .vmt's included there in yellow.
Any suggestions?