Hmm, if you are having a problem with snapping always in the same direction, or always dropping the same wing, try this as a test:

Go up high, roll right in to a 70-90degree bank and hold elevator to make a tight turn. Keep feeding elevator and hold the plane there in a tight turn until airspeed bleeds off and you snap out. Watch the direction of roll, do you roll "into" or up and out of the turn? Do it a few times, and see if it always goes the same way.

Then do it a few times by rolling left in to the turn. Again, which way do you roll?

If your plane snaps "into" the turn in one direciton and "out" of the turn in the other, ie, it always goes the same way, then you've got a problem that isn't fundimental to the planes design, it's something in setup. I usually add weight to the "up" wing, even if the plane appears laterally balanced on the ground.

Once the plane is set up so that it snaps out in both directions, and always one way in one turn and the other way in the other turn, your wings are now working at high alpha together, and you will discover that overall the onset of stall will be delayed.

(btw, you can also test by just pulling loops as much as you can, and seeing if you always snap out the same direction. But I find the loop is not as repeatable as a level highly banked turn unless you are able to always get your wings perfectly level and the nose perfectly in to the wing when starting your loops. The turns take the wind out of the equation)

I've found I can really improve my turning radius of my combat planes with this test. A little lead on the wingtip can make the difference between holding a constant high-G turn and snapping out of it. In fact, it's not uncommon for me to go from something like 75% rate on the elevator to 100% rate once things are balanced out in the air. (elevator rate is set to be as much as I can get while not snapping with in the first 2 loops or 720 degrees of turn at full throttle from level full speed flight, plus or minus a bit)