I have heard intresting things about tamarac over the years.
One being the wood made lighter, faster clipper ships than oak, but with a shorter life span.
Another being the wood is good for well pits, and such because it stands moisture well.
Yet another that it makes poor building lumber twisting with changes of season.
A sawmill man told me his grandfather used some tamarac studs in a kitchen wall that moved summer, to winter, causing the grandmother to complain vigorously. I then ask the sawmill man, "What do you do with it then?" he said, "It goes through with the rest of the pine".
These premises insured by a grouchy Sheltie dog,--- and Cooey.