Interspace arm Length

It's meant to be a vertical pivot-to-stylus length, so are there two sets of headshell mounting holes 12 mm apart? or some way to slide the cartridge back and forth up to 12mm to adjust the overhang? I don't know much about that arm, but it sounds like an adjustment range. If this doesn't sound right, you should contact them -- it doesn't seem like a typo ;--)

Then I would definitely contact them to explain the discrepancy. It's possible, as often happens, that they made a slight design mod. between the two printings. Wish I could be of more help.