Editing(veling) left under seat loosely – always opens. HD 883r 2014

Hello together, I have recently had an Hd 883r and the FS, so I’m an absolute newcomer. Now to my request: The disguise (covering) on the left under the bench always works while driving on i.e. that I have to drive one-handed to the next bay, because I hold the part tight. I tried to fold it in again but it doesn’t rest or sit right somehow. I hope you can help me further, because the next HD dealer has his way.. and I don’t want the track t one-handed driving. For orientation see pictures. To my person: 22 years. Owner of a HD 883r 2014 Vivid Black! Good ride..!