teamstress
Member (SA)
I think the first picture shows the correct belt routing. The belts are already on in the correct manner. The upper pulley controls the head engagement, with all the gears. Try moving that by hand to see if something is jammed or out of sequence.
that could be why it's jamming 
My top deck maybe from a Watson RR-5600 something about the box looks identical in every aspect,down to the color scheme.
Maybe know I see why you guys are seeing a set up thats not anything too mine.So I must have a switchout? You think?
wHO went abve there GMAE too help me,ON THIS hELIX bOX!