Typo in "(1 - 23%) = 67%" should be 33% but calculation is right.

That $8.54 should be $7.54

The slight difference in equity should make less than 1 cent difference in both EVs. I think this bigger difference is accounted for in the skewing that $8.54 does to the result. as the bigger it is the more skew there will be to a bigger answer.