Hi Steve
thanks , what i have found with the gen ones is that you can take them all apart the mesh part can seperate from the clips they are only held in with little plastic like screws
if you look at the front of them with the mesh infront of you just behind the mesh at each corner you will see the litle plastic clips they look like a very tiny plastic poprivit thats one way of telling
or if you post a pic on here i'll tell you if they are gen or not
cheers marco