I had to struggle to remount my Givi side bags until I noticed that the dealership had mounted the striker plates on the rack upside down. Five minutes with a 5mm allen wrench solved the problem. Now they mount with a slick click. The recess needs to be on the underside. When I phoned the dealer, he admitted that they had been sending them all out of the shop wrong. I told him that they are liable to have customers seeing their bags bouncing down the highway.