Unexplained stringing

Hi Everyone,

My K2 is producing a lot of stringing on all prints. I have replaced the hotend and nozzle, the full extruder, and the strain gauge, but still stringing when travelling. Ive also cleaned out all the parts and there are no bits of filament where they shouldn’t be. I think its a retraction issue, but changing retraction settings makes no difference.

Any ideas what could be causing the stringing?

Thank you!

I ordered a new second K2 just before this issue started, it arrived yesterday and it has the same issue, stringing like mad…makes me think it is the latest firmware because none of the issues were present before updating