Practice, practice, practice. Did this one at the weekend the reference is here. It is a Mikoyan MiG-31. I am afraid my time available for doing this king of stuff is going to be in short supply in the next few months. Big project in the offing at work and I don't think I am going to avoid massive overtime. I really would prefer to spend the time getting better but I will take the hit and keep doing as much as I can and make up for lost time afterwards.