Seidelmann owners,I'm in the process of cjanging out the original toilet and noticed after reading up on things that seidelmann never installed vent lines as required for the back of the toilet and the discharge line. The only vent is in the holding talk itself. According to my sources whenever the toilet is below the water line there should be a vent to prevent a siphon effect or the sea cock should always be closed. I was wondering how anyone might have hid these lines and how was it routed. could all vents be sort of manifolded together with the holding tank vent? Just your thought and any pictures would help.Thanks