Hi. Figuring that those of you on this part of the forum have many miles of experience, and your riding health is of paramount importance, I will try this question here too-as I have posted in other places as well, and haven't gotten too much in response, which kinda surprises me.
I have a 17mm difference between right and left legs. My street shoes are all altered to compensate for this. However, getting custom made cycling shoes I have found to be prohibitively expensive. ($1,000 +) So that's not going to happen. Has anyone used shims added to their cleats to compensate for a short leg? Short of using a power meter (which was suggested) is trial and error the only other way to figure out how many shims?