Stukas are not available till Oct 41. When they do attack they can't seem to hit armor, whereas the Soviet a/c hit every AFV that moves, despite having several AA HTs around.
Flak 88mm not abvail til Oct 41, but a good idea.
I think CMBB needs a mod to at least allow the German tankers and gunners to blow the tracks off KV1s and KV2s when it is obvious that they can't penetrate their armor.
Many thanks for comments. This is a great wargame!