The Plaubel Rada backs with counter are terrible when it comes to spacing, and they weren't that much better thirty years ago with Eastern European films that still had old style cardboard strength backing - maybe the old wooden cores were thicker than plastic, or Rada preferred their simple mechanism to err towards a risk of overlaps rather than one of the last frame being half lost.
They count on the take-up spool, so their spacing benefits from winding up more film at the start - and as they leave almost two frames of blank at the end with modern film, there is enough film for it.
I load as per manual (i.e. wind with open slider until the glue strip appears in the film window, close slider, reset to 0 and wind on to 1), wind on one more frame and reset the counter to 1 - this usually adds just enough thickness that the frames barely touch by the end. As the Makina II framing is pretty vague, the remaining risk of a slight overlap at the edges does not bother me there. On the Makiflex and Peco, where framing is dead accurate and overlap would be a nuisance, I prefer the red window Radas (which strangely enough are cheaper on the used market than the flawed counter ones).