Many salutations, NAM team!!! I came upon something rather troubling (points at the attached screen capture).
Just took a look over it--first place I started was the L2 RHW-8S .dat file. Turns out the L1 models were re-IIDed to the correct spot for the L2 version, but ended up not getting raised the extra 7.5 meters up to L2. I've just done that here on my end. The fix attached below should solve your issue--just sneak it into the z___NAM folder somewhere, to ensure it loads after the main L2 RHW-8S files. It'll be good to go out of the box with NAM 37.
-Alex