After banging my head for a day I must admit that I need some pointers. What I want to do is to unlock the Venator II, The Victory II, etc. so they can be built from the start. I tried messing with the tech tree, and while I was successful at unlocking the Victory I and II and the Venator II; I couldn't for the life of me do so without having the Venator I still show up for construction. Also there's the research for Venator II buildable despite the presence of the unit in the GUIi bar. The later is coupled whit the Venator III research, which is OK, but there seems to be a duplication somewhere that needs to be removed.