| Possible Causes | Solutions |
| Die-cutting rule inaccuracy | Increase die-cutting rule accuracy |
| Board die-cutting corners inconsistency | Increase inconsistency |
| Large gap of feeding roll | Adjust driver gear and the couple of feeding roll, decrease gap of feeding roll |
| Die-cutting crease and registration are out of alignment | Correct die and registration |
| Different wear of feeding roll | Adjust or replace feeding wheel |
| Large gap of gear box | Adjust or replace the driver gear |
| Anvil cover wear | Too big velocity difference, adjust the velocity difference compensation |
