Hi there, finaly I managed to set the side boxes rack and the tail at the same time with the spacers Bill mentioned. I went to a metal turner to make a pair of bushings that fit the best my assembly. The turner had no inox steel so I painted the parts to avoid oxidation and it worked just fine. Now I´m very happy to use at the same time my former BMW rear bag and the new side boxes at the same time. Thank every one for your recomendations.
