Hey, that’s my cue: Der Froschkönig - Lowrider 3 in Oldenburg, Germany - #181 by Tokoloshe
You can find all about it here. It’s quite a lot to read, but looking at the pictures is enough. 
Judging by your pictures, the top is also rubbing against the strut plates sightly (you can see colour on the edge being slightly rubbed off). Was the same with mine. Top rubbing slightly, bottom not fitting.