Ah, kgmol = kmol it's an older form of the unit courtesy of the US and some combustion history within Fluent.
OK, good. It sounds like the model is doing something that's messing with the reports. If you check the mass flow of ammonia in both cases I assume it's the same?
Just a comment, I saw you'd got 5 listed species, what is the 6th (bulk) material? Fluent solves for N-1 species so (for example) if I was solving a mixture of NH3, N2, O2, H2 & H20 I'd look for the bulk material & only see 4 of the 5 on the boundary condition settings, the 5th is (1-the rest).
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