Make sure the Capricorn Bowden tube is properly inserted into the Hotend and secured with a collet/clip.
If you're not using one of our profiles, try reducing the retraction speed in your slicer settings.
Filaments flow easier at a higher temperature, so try increasing the printing temperature. If you're running the right profile for your material this shouldn't be a problem.
Reduce the printing speed as the extruder might be trying to feed more filament than the Hotend can handle or run the appropriate slicing profile for your material.
If previous steps did not offer a solution, then we suggest unclogging the nozzle as the issue more than likely originates there.