Friend of mine has commissioned a restore on a "barn find" unit. IIRC, these square top IF filters and such mean that this is the non-z unit. I've only restored a 110z. Any major differences between the two units? Any particular helpful hints for this specific unit? Untitled by Analog Addict, on Flickr Untitled by Analog Addict, on Flickr Untitled by Analog Addict, on Flickr Chrome definitely has some pitting under all the dirt. Wonder how much moisture this has seen? Guess I'll find out when I flip it over and remove the bottom plate.