Topic: Fireface 400, Totalmix, and Cubase

Does anyone here have any experience using a Fireface 400 with Cubase? I'm just trying to record vocals in cubase while monitoring my fireface input through totalmix. So... the backing track plays in Cubase while I record the vocals in Cubase (monitoring in totalmix) and I can get levels sounding good while recording. However, whenever I playback the recording in Cubase the level is a lot lower than it was when I recorded it. It's driving me crazy. I've tried messing with levels a bunch of ways in totalmix but can't get it right.

Does anyone know how to setup Fireface/totalmix/cubase so that what you hear while recording is what you hear during playback level wise?