Impact air leak

I've tried to find out how to fix the air leak by googling it but this leak seems unlike anyone else'. Hope you guys can help, the leak is happening above the rear regulator. I can hear air bleeding out while the probe is at it's rear most (open) position. I had this happen last year and after shooting it a bit it stopped but now it's happening again and doesn't seem to be going away. Fyi, while the probe is forward I don't hear any noise. When I look inside there I see the port where the air is coming up from. Im not good at posting picture but I can email them.

Thanks