Okay Luke, I was brave enough to go outside and take on this mission, in today’s heat, here are my results.
Measurements from my ‘68, little wheeler. Were ecxactly the same as yours.
However, funny as it may seem, the hole spacings on a ‘79 in my shed are,
Wait for it .........
Ecxactly the same as yours.
Cheers
Dev. (I think the heat might have got to me)