When test fitting the front side with the rear side of the wheel, the guiding knob allows them to shift a bit, so it is not clear if the dents of the sides must be paralel or interlaced.
So what is the correct position, in the scheme below (with blue front side and with red the rear side)?
" The DR sprockets have separate outer teeth discs as well as a separate central hub cap and inner and outer sprocket discs which require care to assemble as the two sprockets don’t have symmetrical teeth locations meaning when you attach one you can’t just throw the other on as chances are the teeth won’t line up.
Thankfully the locating pins on the separate sprockets are precise and allow easy fitting but after gluing one sprocket in place you need to test fit the other sprocket to line up the teeth before gluing. Believe me they do line up but you may have to rotate the second disc a few times to find the right orientation and this is a trap for young players."