I can't help much.
You almost certainly know the following but here goes anyway.
The Adlatok is sometimes referred to as the Ugjoktok, as at
http://www.battenkill.com/trip/lb.htm Fragmentary information is available at
1. Alister Thomas. Canada’s Best Canoe Routes. Boston Mills Press, Erin (2001). Authors: James Cottrell and Bob Henderson. The latter is Bob Henderson of McMaster University, as is clear from "Every Trail Has a Story". You might contact him; I have contact information if you have trouble (I believe that he has retired).
2. Dan Murphy, Jim Price and Kevin Redmond. Canyons, Coves and Coastal Waters; Choice Canoe and Kayak Routes of Newfoundland and Labrador. Breakwater, St John’s (1996).
Hope that the above helps.
Allan
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A literal mind is a little mind. If it's not worth doing to excess, it's not worth doing at all. Good enough isn't. None are so blind as those who choose not to see. (AJ)