I may have gotten over my head on this, so bear with me. The jet i am after is the needle jet within the vacuum chamber correct? I figured I would be able to figure it out as I went with the tech directions and the manual. I have managed to strip out two of the screws to the vacuum chamber! I am now getting worried as I said I am getting in over my head. Can someone help me out. Am I in the right spot, any suggestions on getting the screws out. Any help would be appreciated.