I will post an pic of the tensioner this evening.
Here an onther video with sound.
EDIT: here are the pics of the tensioner.
346216D4-07B1-449A-9970-32DC6DC6206C by Wolter Sibma posted Jan 13, 2018 at 4:38 PME752B090-D67D-47DC-93BE-26CACD9CFD00 by Wolter Sibma posted Jan 13, 2018 at 4:38...