Hello, working on my 40 hour flight phase and have a question on flaps or flaperons. Clean stall is at about 38 to 40 mph indicated with 10 degrees flaps might be slightly less but not much at 15 degrees perhaps 2 mph less at 30 degrees stall is about 4 to 5 mph lower however I loose most of my roll control and would not be comfortable in a landing situation is this common with model 111s or do I have a rigging issue for now Iam resetting my flap handle stop at 20 degrees which seems to be max without giving up roll control. Thanks