Have you shot the bow through paper, checked for contact with the rest you are using (Dr. Scholls foot powder spray is great for this). The reason I ask this is that you say at 10-20 yds. you are way off but at 30 yds. you seem to be spot on but just a tad low leading me to think your arrow is stabilizing better at longer distances because it has time to right itself but not coming off the bow well at closer distances hence the bigger miss. Sounds like it is a tuning isssue.

Shane