This is how I did mine, except I moved the wheel contact part down instead of adding another piece. I think it might keep the wheel from shifting a little better my way, and since it is attached by a wing nut it only takes a couple of minutes to move it down. (I see yours does not use a wing nut so it would be a little harder.)Attached are some photos of my 1UP bike rack and my S40E. View attachment 12112 View attachment 12113 View attachment 12114 View attachment 12115
Attached are some photos of my 1UP bike rack and my S40E. View attachment 12112 View attachment 12113 View attachment 12114 View attachment 12115