I wish the 30mm had their own trigger. But Primary in a 190 is the maching guns. Secondary is all the cannons. If I take the 2x30mm, when I pull the secondary trigger button, I'm firing the 2x30mm and the 2x20mm at the same time. the bullistics are different enough that they won't both hit the target unless I'm at very plase range. If I'm in that close and landing both 30mms I really don't need the 20mm so they are wasted. If I'm using the 20mm in a lead turn where they reach out little further than the 30mm, I'm waiting all the 30mms.
If in Real life they were wired this way, then so be it. But If there was a way to fire 30mm and 20mm separately, then I'd like to be able to set th eplane up that way.
A8s are great at diving on targets...Buffs, furballs. GV and ground objects. When used in that way they pack quite a punch.
However, It will lose a 1v1 vs almost everyplane in the game because it may be the worst turning plane in the game. Like all 190s it has some snap move tricks, but those moves require a complete E-dump, leaving you helpless if you miss, or if there are multiple bandits around. You will see a lot of Head On shots from 190-A8. Some will blame that on Noob pilots, but I think it's because it turns so pourly, has such devestating Firepower, and high toughness that it is probably the planes best chance to get a kill.
