Personally I cant see where the Blackhawk isnt a good shooter with such a forgiving brace.
It all boils down to confidence.........
Once you think the reason you are shooting "bad" is the bow's fault then it's time to move on no matter the brand or model.
Shooting is mostly a mental game.... It takes a long time to build the confidence and only a second to lose it.
Hope everything works out for you. Goodluck.