Due to the differences in the way the tech models and the retail missile models are built, the tech models appear to be off center when rotating in the tech room, weapons selection screen, and in the hud targetbox. To fix this, all that needs to happen is that the ACEN chunk needs to be defined in PCS2. I don't think PCS2 will write the ACEN chunk if the ACEN vector is defined as <0,0,0>, but a value of <0,0,0.000001> will tell PCS2 to write the ACEN chunk to the file and then the tech model will rotate properly. This should not affect gameplay at all