OK, so I changed the wiring.
But, now I am experiencing very weird things with my Quickie.
Change the wiring back to the way it was written and pictured in the manual, then flip the D cells around.
Don't know if it's just the brand of 'D' cell I use, but it has a recessed centre on the negative end and won't make a good contact if the cell is just flipped. I'll get round to re-wiring eventually.
Paul