[Penthode]

Yep, yep and yep to the previous replies.
All that stagger tuning is is to have each tune circuit tuning staggered to obtain the desired wide bandwidth. Later, when you get to the point where you are frequency sweeping the entire IF amplifier, you will have to slightly tweak some of the stages to get the flat top shaped response with the frequency markers at the correct amplitude. And because the stages are stagger tuned, you will look at the response on the scope and adjust one of the stagger tuned stages corresponding to the part of the band to correct it.