Hello Michael,
Yes, absolutely. I have found the book: "ANDY PRUITT'S Complete Medical Guide for Cyclists" an absolute Godsend on the subject of bicycle fitting. I have referred to this resource time and time again.
This being said, I would NOT add shims under the cleats of my riding shoes unless and until I have, not only read the entire book cover to cover, but also fully understand the concepts. Having done this, I was able to completely eliminate the knee and ankle issues that I was having by using the shims that he recommends. Hope this helps...
CUL8R!
Siegfried