Printing lines not straight and letters shadowed. Help!

Open the cover over the print head and *carefully* inspect the clear thin plastic strip that runs from left to right near the print head. If you see any lubricant (white grease) on this encoder strip, it needs to be cleaned off.
1. With the cover open and the print head in the center, unplug the power cord. This will allow you to gently move the print head left or right.
2. With a cotton swab wetted with rubbing alcohol, *gently* wipe the grease spots from the encoder strip. (Be VERY CAREFUL you don't dislodge the strip.) You may need to move the print head to the left or right to get all areas cleaned.
3. Let the alcohol dry off completely. With the area clear of cleaning tools, debris, and fingers, plug the power back in.
4. Try a test print.