I’ve bought x2 of these, 1x locks into position easily and doesn’t slide down once installed.
the other one however kept dropping down once installed, it can’t stay up. I’ve exchanged it twice but still keep getting the same problem.
is there a lock I’m missing, to keep it in place?
or, did I luck out and get x1 good one , and keep getting x3 not so good ones?
Attached is a pic of the good functioning one. It doesn’t need to be closed in, in order to stay in place
whilst the others keep dropping down, even when closed in.