Who does not use a Grain Scope?

[Larry Bullis]

I think I'm just an idiot, but I can't use a grain focuser with 120. 35mm is no problem, the grain is crystal clear. But I can't make out any detail, and definitely no grain, when trying to focus 120...

Idiocy is only an advantage under certain circumstances but is useless under conditions C-14, M-12, Q-27 and numerous others in special cases.

What you seem to be saying is that you aren't printing large enough when you use 120 film. ; )