new race AI testing...

[trooper]

1)I'm creating a new AI, and testing it.
I would like my race to use capital missiles. But, even if the race have missile I knowledge, the IA prefers to add 3 cannons on its first frigate design. How can I prevent that ?

2)I'm playing with full IA control (all ministers on) to test my AI files. Is that the best method ?

on another subject :
3) Comparisons and history : must they be erased "by hand" after each game ? these informations seems to be kept from the Last game...