Are you using MG soil, or just MG fertilizer? Or both? While I've seen MG soil produce good vegging results, their standard soil uses extended release ferts that are active for an advertised 6 months. This means, that you cannot flush what would be an excess of N in the soil before flowering. Anyhow, that is the reason why I generally advise against MG soil. While there are better fertilizers out there, MG fertilizer (not the extended release pebbles) should flush out just fine if you add too much. I don't see any obvious deficiencies or burns.

Oh and your buds look amazingly frosty and beautiful, hopefully you can get them to pack on some more weight because that looks to be some amazing grass she will produce. No matter what the result of the grow is, take pride in that you grew some high quality buds!