Originally Posted by idkfa
That is correct. However, if memory serves, the Freak insert does extend to where twistlock channel is located and the wall thickness is quite thin.
The channel does extends that far. I don't have any instrument to measure it, but it doesn't seem any thinner than the mid-section with the "FREAK" cutout and vents, and due to the ridge that locks the twist-lock, the thinnest portion is minimal. (I am looking at the SS version.) I can't imagine it ever being a problem. Had you heard it was?