I just realized what you meant,,, Didn't have my glasses before I thought the piece was molded to the tubing. Anyway, I used incremental drill sizes to get old piece out. The only problem is debris getting into the tube while I drilled, and, more importantly how well would new one screw in. The new manifold would be a larger sweep and they are also sending me the new control panel This for $80. Maybe shouldn't take a chance with something like a manifold. What do you think/ Thanks George