The oil coolers are are not the same on each wing. I believe one needs to be reversed. Since they are moulded into the center sevction you can not change their position.The flaps are a nightmare to assemble so I have heard. Best to wait till they get all of the bugs worked out. Heavy plane for it's size. Not sure it will be fun to fly at this time. One of the aileron servo hatches are reversed. The manual has a lot to be desired. Not a good ARF for the beginner.