Fan Coil Unit Connectors.JPGI'm trying to modify a family for Revit MEP 2012. This family for a fan coil unit has several family types nested within the family. Each family type is for a different fan capacity. Each family type has pipe connectors connected to extrusions. The geometry of the fan coil unit cabinet is different for each family type. Is there a way to constrain the pipe connectors and their associated extrusions to the cabinet work face so the connectors will change position with the changing cabinet geometry? The attached image shows where I would like the connectors to be for all of the different family types. At present, as soon as I change from one family type to another, the pipe connectors are out of position. I appreciate any suggestions.