bi level wings are kinda fragile for those of us that roof it a lot. The JC wings are pretty cheap because you get 2 of them. I have not tried them recently, didnt know they made them thicker.

Side Note: I saw a local this weekend who used the JC alum wing mounts, cut the nubs off, drilled and tapped the mount and it using screws to mount the wing. Looks so nice. Should have been that way from the start.