Nice sidecar and system. I have a question: I recently drove similar system with 1200GS Adventure 2006 bike. I noticed that when downshifting if the RPM is slightly high, the bike shakes and you fill it at the handle bar. This was mostly happening when downshift from 3 to 2 and from 4 to 3, also during using engine break The problem is less noticeable if I take care not to downshift from a too high RPM. Is this common on flat boxer engine or is it due to the sidecar (leaning type)? This was my first experience with 1200 Gs and also with side cars. I would really appreciate your comment on this.