# Material Oozing or Leakage

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If your printing material is oozing between raises or prints, it is likely that your Relief Pressure is set too high or your plunger's O-ring is missing or has failed. First, inspect the O-ring to insure it is properly in place and hasn't become swollen. If you need to replace it you can follow the steps in our [NOVA Maintenance](https://docs.voltera.io/docs/nova/troubleshooting/print-issues/broken-reference) guide. If the O-ring looks good, then you’ll want to adjust the relief pressure before you try printing again.

This can be adjusted two ways. Either indirectly by running through the [Calibrate](https://docs.voltera.io/docs/nova/learn-nova/software-overview/calibration) workflow for your material again, or directly in the Check Flow step in the Dispense workflow.