Transfer DA-78HR tapes to Sonar Through MOTU 2408

I have Tascam DA-78HR machines, PCI-324 card installed, MOTU 2408mkI and running Sonar 5 Producer Edition. I went through all the manuals and all advice I could find here and everywhere and still no results. I am able to hear Sonar on the 2408, however with some noise but when I play the tapes on the Tascam machines is very noisy. I am very frustrated and spending lots of time on this. Anyone else has this setup that I could check the settings? Let me know what other info I can get to correct this problem. I would like to transfer all my tapes and end up with sonar tracks for editing. Can I go back and forth with this setup?

Thanks in advance for any help and advice.