C)Press the FEED Key several times, until media tracking is normalized through the printer. Then, while feeding several more labels, observe the flow of the Ribbon from the Supply Hub. Proceed according to your observations:
If the ribbon flow is rippling, or if bagging is present, proceed to D; or,
If the ribbon flow is evenly tensioned and smooth, proceed to E.
Ribbon
Supply
Hub
FEED
Key 
observe for flow
D)Slightly loosen the Support Cover Screw and, while repeatedly pressing the FEED Key, slowly adjust the Idler Adjustment Screw to smooth the ribbon flow from the Supply Hub. Afterward, carefully tighten the Support Cover Screw, and then feed several more labels to verify your adjustment.
Supply Hub
smooth the ribbon flow
Idler Alignment
Screw
Support Cover
Screw
5