Soldato
I had a similar issue a few months ago and it was just a pipe split again. It was down the left side of the engine, there's a row of 3 small pipes attaching to the engine, one of those was the culprit!
If it IS this, then you'll get the "hunting" all the time at idle, since the engine will struggle with air control.
If it IS this, then you'll get the "hunting" all the time at idle, since the engine will struggle with air control.