Originally Posted by Anticyclone
Ah, so yours isn't there either on the right?
That is correct. Back in the dark ages some time an engineer at a launch was reported, believe it or not, as saying that a typical box will protrude further on the left than the right. So thay put a little feeler in there asuming that a typical owner may want to know when you are about to touch down the expensive panniers.
Look at 3:55 in this video...
That is the way they come from the factory.