it also seems you cant keep them out... IE the turns i do, even if they are the same force on the stick with no slippage cause the slats to keep going in and out, sometimes in random orders.
Oh they can be kept out alright.
But the problem is none of the 109s can maintain a hard turn under 200mph with AoA high enough to keep them popped out.
It's like this;
1) You enter a knife fight. The enemy chops throttle, kicks rudder and pulls hard to execute a tight turn.
2) You also chop throttle, kick a bit of rudder and pull hard.
3) clack! the slats pop out, momentary shake.
4) Ut-oh, your speed starts getting under 200mph. You can't use flaps yet, but you're so slow and unstable that you can't pull a tighter turn... so you ease the stick.
5) bap! the slats pop in back, another shake, and the excellent accelerations of the 109 backfires, and speeds your plane up.
6) So you chop throttle again, kick rudder again, and pull tighter again. Clack! Slats pop out again.
7) And then, almost immediately, 109 wants to stall out, you have to ease stick, and bap! they go in again, and you shake again.
8) repeat above
...
So it's a continuous procession of clack-bap-clack-bap-clak-bap, and shake shake shake shake all along the turn. Only when you can start to pop flaps, you can maintain an AoA high enough to hold the slats out and stabilize the plane that way... except by the time you start to use flaps you're probably outturned already.
...