I'm glad to hear you got this sorted out to your satisfaction.

Duo devotees needs must assemble a goodly assortment of hangar queens. Be sure to hold onto that power board, there's no telling what may be bolted up to those in the future and they're relatively scarce little treasures. That's about the only cubic available in the Duo for wedging in something useful. A 14.4k Modem is pretty much useless ballast.