Just got the Cascades and I will readily admit that I have not really ever used porros - my Yosemites have sat around the house for a couple of years now. I am having trouble - I hate to admit this - focusing the doggone Cascades!! Is there a secret to them?!! I am an intelligent, degreed person and I can't focus my new bins.......
I am guessing you are questioning the setting of the diopter?
If that is the case then here is a big bit of advice. The Cascades diopter adjusts the left eyepiece and not the right. You could turn that diopter forever and you would never see the right eyepiece change focus.

...just a guess as to what you were asking though.
Beyond that the only other thing I can think of is that you might be trying to focus on a fairly close object. With the fairly narrow field of view on the Cascade porros I would suggest focusing on an object at least 20 yards away to initially set the diopter. The overlap of images between both barrels is better the farther away you go.
Thank you!!! I was looking for the diopter on the right eye and somewhere I had vague memories of a post regarding this issue, but I couldn't find it. Yes, I was focusing inside the house and tried some outside in the dark and the right eye was the issue.
Have them in my hands and am looking... for a focus wheel AND a diopter....not seeing both. Wait - is the tiny wheel tagged 8x42 the diopter? Sad that I had to have help in finding it!!