Hi, I think this is all addressed in my question.  I'll copy what I wrote there:

Federal wages: my wages + my husbands wages.

Mass wages: (2* my wages) + my husbands wages.

I entered one W2 for me, and one for my husband.

On the final calculation, the total federal wages etc are correctly the sum of my wages and my husband's wages.

On the final calculation, the total state wages etc are incorrectly 40% higher than the state wages, by almost exactly the amount of my wages.

TurboTax automatically populates my state numbers, and does not provide any mechanism for me to see why the state #s are 40% higher than the federal #s.