Thanks for the response(s)!
Yes - I'd expect the walls to be offset, given the difference in wall thickness. My question was more what is the appropriate way to handle lining up the walls?
Right now, the basement wall sticks further into the house than the 1st floor (which obviously causes the offset walls). So the only solution I see is to shift the basement foundation out, or the 1st floor in to line up the stairwell walls. But either of those would shift the 1st floor wall to be over the furring wall in the basement, rather than the foundation. So my concern is that this would cause stability issues if one wall is resting on the furring wall in the basement, rather than the foundation.
I'm sure this is a pretty basic (and admittedly ignorant) question - I'm just learning, and don't want to base a plan on a fundamental design flaw.
Thanks,
~Dean