Cool maiden. I have the 1875mm B-17 and with no flaps and about 1/2 to 3/4 throttle it makes decent scale take offs. She has a large wing and 4 engines so it kinda flies like a trainer. I never use take off flaps because it will climb like yours did, but I use full flaps and about half throttle and it settles in like a dream... Hopefully that helps you a little.