Many in the tape community uses Soren Wittrup, he used to be in the Chicago area but has relocated a little further out, he should still be within driving distance. I've used Soren myself for my Studer and would use him again the next time I needed work done. He is extremely knowledgeable and very efficient, he works a little differently than other techs I've dealt with.
cs_electronics@sbcglobal.net
cs_electronics@sbcglobal.net