Hi all - I'll replacing the old taco circ with a grundfos alfa on the pressurized system inside the house. This has nothing to do with the OWB side of things. The problem I have is the flanges are a different configuration than the taco, they're turned 90 degrees. If I try to put the alfa in same place as the taco the alfa hits the bottom of the pressure tank making it impossible to install the alfa. I'm wondering if it's okay to remove the pressure tank, thread a 90 degree elbow into the air scoop, thread a 3 inch nipple into the 90 and then to another 90 to which I would then hang the pressure tank. Would this be acceptable? Anything wrong with this approach? Thanks. Roger