hmm...i havent eaten any of my beans ever, but i roasted some bali shinzan a few weeks ago, and the resulting espresso (SO) did taste smokey. Apparently i roasted it too dark for that bean, and was advised to roast it lighter. I did, in a blend, and i think it tasted better - had the flu and couldnt really taste anything!
So maybe your beans are roasted a bit too dark???