Marlin:
Ok, you know what a bad tensioner sounds like!
"Do the tensioners have a one way valve that hydraulically locks them in the furthest out position attained? Meaning is it possible to preload the chain to much prior to pin pull? Or, will stretched chains make noise?"
They are somewhat "locked" mechanically, however, they bleed off very slowly to where the tensioner is just nice and snug. They work like shocks, practically. So, no, you can't preload them during installation where they would not return to their ideal position.
The chain alignment is not changed by the tensioners. The alignment is between the intermediate shaft gear and the cam sprocket. Only if you take the cam sprocket off (or more), you will need to worry about it.
If your car wouldn't be an 82, I'd say you forgot the spacer for the idler arm. But your idler arms are already the ones with the wider base (80 and later).
I am clueless. I do not have enough years with these cars to know what the noise could be. If it were my car, I'd just take the covers off again and see what's up.
Do both sides whine? Stuipd question: Did you forget anything in there? It happens to surgeons too, sometimes.
George