Recently moved my Givi V46 Top Case from my old 2013 F800GT to my new 2016 R1200R. The case fit perfectly on the old F800 with back rest for my 2-up passenger. When the case was installed on the R1200R using the bracket Givi makes for the R1200R, the backrest is now about 3 inches too far forward making the pillion un-usable. Does anyone know if there's an offset adapter or a quick fix. Thanks!