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Those resistors are in the driver stage, and the last four stages are direct-coupled, so no, this isn't a bias problem. If those resistors are smoking it means something is dead shorted, and if one of those transistors shorts, it takes the whole neighborhood with it usually, right up to the outputs. Those are NTE36/37 so they aren't expensive, so there's that. I'd bet you wind up replacing Q409-Q416. Maybe you'll get lucky and one of those electrolytics in the driver stage shorted and it's a quick easy fix.
There are fuses that should have protected the circuits. If they didn't, it's possible someone has been in there monkeying around where they shouldn't have.
It's a really nice amp.
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