Love this map! Probably took a bit much height.
My trick for avoiding wrong contours was to add downhill tags on all curves in ocad before converting (but hide them when exporting the map image). And make sure curves are not disconnected (especially behind cliffs etc)
I <3 CF, I agree with you. This map is wierd and sometimes I don't get it either. Sometimes when you convert the contours are slightly displaced from everything else and that happened here. I tried to fix this in the OCAD file but only partly successful.