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Were all of these 11 from collection agencies (not OCs) and were for sure deleted? How many more do you have? How old were these?
I ask this to because some have done PFDs and the CAs wouldn't delete. Often they will rely on SW only rather than pulling their report to confirm.
Also, if you had 11 CAs deleted, and have 8 more out there for example, you may not get much of an increase. You'll see the big changes when you drop the last 1-4 or so. Also, age of the CA plays into it, but plenty have reported removing their last CA at 7 yrs old and have seen a sizable increase.
BUT CONGRATS on the PFDs!!!!! That's amazing. Which CAs were they?