Sorry, I must have overlooked this. I use the Costco in Schaumburg, Il. (847-969-0792)
I recommend trying to get a appointment with Kathryn Otto, MA,CCC-A She is a licensed Audiologist. with I believe 26 years as a audi. She also was a teacher at Northwestern I believe. If she is not available try Kathy she is also good as she used to be in the business in Ind. and has been at this Costco location for 6yrs. Good luck