check the flo rite site for parts .. wm has come in on price on some. have to use the fly high bag connectors the ones from flo rite leak and are a different shape on top if you glue them they most likely wont leak.

Cut scupper and criss cross drain lines, wye the drain lines with the vent will help siphon the bags more flat..

??? if your going to drill holes in the bottom why not just by reversible pumps. solve a lot of problems... and work.