Hi there.
So, here is the pic
http://i65.tinypic.com/102ov35.jpg
My riser arrived with this black gum glued on their bottom side.
I tryed to indicate them on the pic with the red arrows.
Do I have to remove those or are they made to stay there?
Because if I remove them, the bottom side with be touching my aluminium frame, and I don't think that's a good thing.