I've recently resettle my studio with DM3200 and PT 10. I patch my NEVE mic preamp output to TubeTech CL 1B compressor. And the output of TubeTech to line in of DM3200. The signal is successfully routed to ProTools through IF-FW card. However, I still have to adjust the gain knob to 10 o'clock of the channel to get the signal loud enough. Did I do something wrong with my setup? Because I think the gain knob shouldn't be adjusted if there is 'Line In'. Also, there are only 24 I/O shown up in ProTools rather than 32, why??