True about ‘don’t fix it’ fec153, but probably 99% of the plans in MR today are more interesting than Atlas plans. Then again, I suspect they’re doing better financially by keeping old plans alive for unsuspecting beginners, while they put their money into new models, etc. They turn out great engines, so the outdated track plans can be forgiven.
Many years ago in my first year of university, the Physics lecturer indicated an error in his notes and said it would be a good exercise for students to find it. A fellow student who was the son of the then Dean of Engineering went home, checked his father’s notes and found that the same lecturer not only had given the same lecture to his father 25 years earlier, but it had the same error in the notes.