Line 2 is VERY quiet?

I wasn’t sure where to post this but I am using 2 Shure SM7B Microphones and trying to use them to record a podcast with a friend. I am using the Steinberg UR22 MKII and recording into a multitrack session in Adobe Audition. When I record the waveforms seems to be pretty equal for both lines but the line 2 microphone is extremely quiet compared to line 1 when I listen to the replay of the recording. Anyone have any idea how to fix this?