I recently purchased a Tunze Comline DOC 9001 DC Skimmer on the AquaCave.com website. It was purchased on 05/30/2025. The wheel (the piece that slides + to -) to adjust the air didn't come in the box. The silencer/ tubing attachment that would go connected to back of the skimmer on the magnet did come in the box. The only thing that was missing was the wheel. What do you recommend I do to get this missing piece for my skimmer. Without it I don't think the skimmer will ever run optimally.



