Correct Setup Of Mixer To Usb Audio?, Connecting Behringer 1604A to Roland UA Options

[Dunepilot]

I have recently bought a Behringer Eurorack MX 1604A, and would like to be able to link it (and my various
instruments) into my Edirol/Roland UA-30 USB audio box so that I can record and monitor incoming signals properly.

Using the pair of phono inputs and the pair of phono outputs on the mixer, marked 2-track 'Tape in' and 'Tape out' (not the main mixer outputs),
I am able to get a signal coming out of the USB UA-30, but only by depressing both the '2 track' and '2 track to mix' buttons. However, what this means is that every time I record and monitor using the mixer, I'm recording a complete main mix plus the new part I'm really trying to record separately.

Where am I going wrong

You can check your recording timing by putting a "blip" or "pop" on a track and playing it back through your speakers or headphones while recording it through a mic on another channel. This way you can see exactly how much the two waveforms are off.

I've set up Digital Performer that way. There's a setting in DP for Recording Offset. I would think that Logic (which I haven't used much) would have a similar setting.