DAT import to Logic Pro X (General questions on Sync and Start IDs)

I'm currently in the process of archiving some old (1991 being the oldest) DAT tapes.

Looking for some help and advice on how best to import them into Logic after a long night of googling/research (including this forum) which has produced a variety of conflicting reports.

I have a Tascam DA20 MKii that I am using to play the DATs through its Digital Coaxial output into my Mac. (Full chain: Tascam -> Digital Coaxial Cable -> Coaxial to Optical (TOSLINK) converter -> Optical Cable -> Sound Card -> USB to Mac).

When I have a tape at 48Khz, I set the sound card input via the Audio MIDI Setup utility to match as well as in Logic. If I have a tape at 44.1Khz - same process. This appears to be working correctly however every now and then I am getting small clicks. Some are "on the tape". I.e. when I play back via the analog output of the DAT machine, they are present at the same timecode - however some are not. The research I've done indicates its linked to the sync clock, but other posts have said as long as the sample rates match it makes no difference.

So - I have no idea which sync mode in logic to use for this to even give it a go.

In the recording project settings Synchronisation tab which setting should I change? I think it should be "Audio Sync Mode - Core Audio - External or Free" but I'm not sure and have no confidence that its working correctly? Would this sync the two machines and possibly prevent the random clicks?

Also on a separate note: Does anybody know how to get DAT tape Start IDs into logic? Is it even possible in logic?

I appreciate DAT is a dying (well dead from 2006) format, but any advice would be brilliant.

Thanks