My printer didn't do the latch very well on the f3 version, it looks fine but it just doesn't fit, I thought the printer could have shrunk it or somthing, the inner curve stops it engaging the lump in the lid and when I shaved it back the cut out didn't fit the lump.
Now youve said it I'm wondering if the two latch files are the same or not, I can't just check right now but will later.
I was going to redraw the latch but if it's different to the naza version it may not be of much use to you.