Photos 7-8 shows the QMS sprocket guard. Belt sanding was needed to keep the crank arm from hitting the outside edge of the guard and all guard holes had to be enlarged to fit the 4-bolts holding the sprocket on the V-boxx. Photos 9-12 show the chainline with a 13T freewheel. I use a SRAM 890 chain and chain to QMS sprocket guard clearance is adequate and there is no rubbing.