BTW, I have a chart that came with my Z3. It also includes the Z5. I read (on this forum) that they changed the Z5 plex. I'm not sure which plex version my subtension chart would cover.

For the 5-25 plex it shows:

Thin wire = .23" (5x), .05" (25x)
Thick wire = 1.05" (5x), .21" (25x)
Space between thick wires = 16.75" (5x), 3.34" (25x)