I'm very interested in learning more about the principles behind the flexing wing ribs and how they should be behaving in flight. I read the earlier post and advice about pushing the upper rib back up before each flight (Jan 2018). Pushing them back up prior to a flight ostensibly will increase the camber on the upper wing surface and seems like it might help the stall speed for the subsequent take off, but once they get stuck down again (e.g., after flying at higher/cruise speed) they'll no longer move back to the position that would give more camber on the upper wing surface and hence the lower stall speed.
Are the upper ribs really supposed to be stuck down in this lower/deflected position after a flight? (See picture)