When I Add A User To My Multisite They Are Added As Editor To ALL Of My Subsites!?

I am stumped, and it is becoming quite cumbersome.
I have a multisite of, currently, about 30 subsites. This grows weekly as new consultants sign up and I push out a new subsite for them.
Here is the issue: When I add them as Administrator to their personal subsite, they are also added as Editors to ALL current subsites in the system!?
Any ideas how to stop this?
Is there a plugin with which I can see and bulk delete users from subsites they should not be in?
Thanks all.
Derek Brown
The Techy At IntimateTickles.biz