Update. Predisposition of pass-through fittings from the tank holder support to the opposite side. A job to lose your mind far from simple given the three walls to be passed and all the processing that ensued. I started by taking the measurements of all the center distances in relation to the tank that I will mount to then proceed to the drilling with the appropriate cutting cups of various sizes on the support, on the frame and then on the MB tray. Later I had to cut the shield to make the fittings fit 90 degrees (later we will see why and how the tubes will be fitted). I also had to make a custom-made cover to close the larger hole on the frame to make sure that the grommets of the feed-throughs remained incorporated into the frame to ensure that the bowl-holder cover rested well on the inside. In the photos the whole procedure, and you understand them better than I mean. Stay tuned.