[AMRadio] Stagger Tuning IF transformers with scope

[Ka9p]

It's embarrassing to ask, but I want to stagger tune the IF transformers in a 
51J for a little broader AM response with my scope, and realized I don't know 
exactly what to do - I assume you use a sweep generator or FM sig wider than 
the bandpass, but don't understand how to use the scope to look at the 
response (and to think I got my license when you had to know something) - if 
there's 
a reference on line somewhere or someone can give me a hint I'd really 
appreciate it. Thanks, Scott