I've had the same problem. The auto-pitch worked itself all the way down to 8:30 just after engine on. But taking of while on manual (and set at 12:00 or 11:30 by me), and shoving the automatic back in afterwards, fixed it!
I'm just not sure if there's ever any slat coming out in any situation. Everytime I try something even remotely hard-turn-ish, I stall and spin faster than the bullets fly. With engine torque or against it, it doesn't even matter.
And by general consensus, in RL, you gotta mean it if you wanted to stall the Me-109, in all incarnations...
