No, not if the only thing adjusted is the turnbuckle, which is what the above posters are talking about. There is an additional way to adjust the shifter lever placement and that is by rotating the clamp around on the shifter input shaft, just like in the olden days when that was the only way to adjust the lever. If you happen to run out of turnbuckle adjustment you can always jump one or two teeth on the input shaft but the shifter works best if the input to the shifter shaft is as close to 90 degrees as possible.
Brian
It shifting quality affected?